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Implemenatation of MEDFileFields::linearToQuadratic + Remapper is now dealing with...
[tools/medcoupling.git] / src / MEDLoader / Swig / MEDLoaderTest3.py
index 4d7d753bebdc3c34841826792708be87842c2f17..f970090ea773a024612d2360233988768865d73e 100644 (file)
 #
 # See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
 #
-# Author : Anthony Geay (CEA/DEN)
+# Author : Anthony Geay (EDF R&D)
 
 from MEDLoader import *
 import unittest
 import platform
 from math import pi,e,sqrt
 from MEDLoaderDataForTest import MEDLoaderDataForTest
+from distutils.version import LooseVersion
+
+import sys
+if sys.version_info.major < 3:
+    import cPickle as pickle
+else:
+    import pickle
+
+class StdOutRedirect(object):
+    def __init__(self,fileName):
+        import os,sys
+        sys.stderr.flush()
+        self.stdoutOld=os.dup(2)
+        self.fdOfSinkFile=os.open(fileName,os.O_CREAT | os.O_RDWR)
+        fd2=os.dup2(self.fdOfSinkFile,2)
+        self.origPyVal=sys.stderr
+        class FlushFile(object):
+            def __init__(self,f):
+                self.f=f
+            def write(self,st):
+                self.f.write(st)
+                self.f.flush()
+            def flush(self):
+                return self.f.flush()
+            def isatty(self):
+                return self.f.isatty()
+            def close(self):
+                os.fsync(self.f)
+                self.f.close();
+        sys.stderr=FlushFile(os.fdopen(self.fdOfSinkFile,"w"))
+    def __del__(self):
+        import os,sys
+        sys.stderr.close()
+        sys.stderr=self.origPyVal
+        os.fsync(2)
+        os.dup2(self.stdoutOld,2)
+        os.close(self.stdoutOld)
 
 class MEDLoaderTest3(unittest.TestCase):
     def testMEDMesh1(self):
@@ -144,10 +181,10 @@ class MEDLoaderTest3(unittest.TestCase):
         g2_1.setName("G2")
         mm.setGroupsAtLevel(-1,[g1_1,g2_1],False)
         g1_N=DataArrayInt.New()
-        g1_N.setValues(range(8),8,1)
+        g1_N.setValues(list(range(8)),8,1)
         g1_N.setName("G1")
         g2_N=DataArrayInt.New()
-        g2_N.setValues(range(9),9,1)
+        g2_N.setValues(list(range(9)),9,1)
         g2_N.setName("G2")
         mm.setGroupsAtLevel(1,[g1_N,g2_N],False)
         mm.createGroupOnAll(0,"GrpOnAllCell")
@@ -166,7 +203,7 @@ class MEDLoaderTest3(unittest.TestCase):
         self.assertTrue(g2_N.isEqual(t));
         self.assertTrue(mm.existsGroup("GrpOnAllCell"));
         t=mm.getGroupArr(0,"GrpOnAllCell")
-        self.assertTrue(t.getValues()==range(5))
+        self.assertTrue(t.getValues()==list(range(5)))
         #
         mmCpy=mm.deepCopy()
         self.assertTrue(mm.isEqual(mmCpy,1e-12)[0]) ; del mm
@@ -301,7 +338,7 @@ class MEDLoaderTest3(unittest.TestCase):
         self.assertTrue(not mm2.existsFamily("Family_-8"))
         mm2.createGroupOnAll(-1,"GrpOnAllFace")
         self.assertTrue(mm2.existsFamily("Family_-8"))
-        self.assertEqual(range(3),mm2.getGroupArr(-1,"GrpOnAllFace").getValues())
+        self.assertEqual(list(range(3)),mm2.getGroupArr(-1,"GrpOnAllFace").getValues())
         pass
 
     #testing persistence of retrieved arrays
@@ -381,11 +418,11 @@ class MEDLoaderTest3(unittest.TestCase):
         m.setRenumFieldArr(-1,n1)
         m.setRenumFieldArr(-2,n0)
         nbOfFams=len(fns)
-        for i in xrange(nbOfFams):
+        for i in range(nbOfFams):
             m.addFamily(fns[i],fids[i])
             pass
         nbOfGrps=len(grpns)
-        for i in xrange(nbOfGrps):
+        for i in range(nbOfGrps):
             m.setFamiliesIdsOnGroup(grpns[i],famIdsPerGrp[i])
             pass
         m.setName(m2.getName())
@@ -539,6 +576,10 @@ class MEDLoaderTest3(unittest.TestCase):
         ff1.setTime(3,4,2.3)
         itt,orr,ti=ff1.getTime()
         self.assertEqual(3,itt); self.assertEqual(4,orr); self.assertAlmostEqual(2.3,ti,14);
+        f1.setTime(5.5,7,8)
+        ff1.copyTimeInfoFrom(f1)
+        itt,orr,ti=ff1.getTime()
+        self.assertEqual(7,itt); self.assertEqual(8,orr); self.assertAlmostEqual(5.5,ti,14);
         da,infos=ff1.getUndergroundDataArrayExt()
         f2.getArray().setName(da.getName())#da has the same name than f2
         self.assertTrue(da.isEqual(f2.getArray(),1e-12))
@@ -812,7 +853,7 @@ class MEDLoaderTest3(unittest.TestCase):
         m1=MEDLoaderDataForTest.build2DMesh_1()
         m1.renumberCells([0,1,4,2,3,5],False)
         tmp=m1.getName();
-        m1=m1.buildPartOfMySelf(range(5),True) ; m1.setName(tmp) # suppression of last cell that is a polygon
+        m1=m1.buildPartOfMySelf(list(range(5)),True) ; m1.setName(tmp) # suppression of last cell that is a polygon
         mm1=MEDFileUMesh.New() ; mm1.setCoords(m1.getCoords()) ; mm1.setMeshAtLevel(0,m1) ;
         mm1.write(fname,2)
         ff1=MEDFileField1TS.New()
@@ -839,7 +880,7 @@ class MEDLoaderTest3(unittest.TestCase):
         m1=MEDLoaderDataForTest.build2DMesh_1()
         m1.renumberCells([0,1,4,2,3,5],False)
         tmp=m1.getName();
-        m1=m1.buildPartOfMySelf(range(5),True) ; m1.setName(tmp) # suppression of last cell that is a polygon
+        m1=m1.buildPartOfMySelf(list(range(5)),True) ; m1.setName(tmp) # suppression of last cell that is a polygon
         mm1=MEDFileUMesh.New() ; mm1.setCoords(m1.getCoords()) ; mm1.setMeshAtLevel(0,m1) ;
         mm1.write(fname,2)
         ff1=MEDFileFieldMultiTS.New()
@@ -871,7 +912,7 @@ class MEDLoaderTest3(unittest.TestCase):
         pass
     # Tricky test of the case of in a MED file containing a Field on GAUSS_NE is lying on a profile that is reality represents all the geom entities of a level.
     # By default when using setFieldProfile method such profile is not created because it is not useful ! So here a trick is used to force MEDLoader to do that
-    # for the necessity of the test ! The idea is too create artificially a mesh having one more fictious cell per type and to roll back right after !
+    # for the necessity of the test ! The idea is too create artificially a mesh having one more fictitious cell per type and to roll back right after !
     def testMEDField15(self):
         fname="Pyfile36.med"
         m0=MEDLoaderDataForTest.build2DMesh_1()
@@ -886,7 +927,7 @@ class MEDLoaderTest3(unittest.TestCase):
         da=DataArrayInt.New(); da.setValues([0,1,3,4,6],5,1) ; da.setName("sup1NodeElt")
         #
         ff1.setFieldProfile(f1,mm1,0,da)
-        m1=m0.buildPartOfMySelf(range(5),True) ; m1.setName(tmp) ; mm1.setMeshAtLevel(0,m1) ;
+        m1=m0.buildPartOfMySelf(list(range(5)),True) ; m1.setName(tmp) ; mm1.setMeshAtLevel(0,m1) ;
         mm1.write(fname,2)
         ff1.write(fname,0)
         f1=ff1.getFieldOnMeshAtLevel(ON_GAUSS_NE,m1,0)
@@ -1172,11 +1213,11 @@ class MEDLoaderTest3(unittest.TestCase):
         expected1=[1.,10.,100.,2.,20.,200.]
         nodeCoordsWithValue1=[10.,2.5,0.]
         nodeCoordsWithValue2=[10.,3.75,0.]
-        for i in xrange(3):
+        for i in range(3):
             self.assertAlmostEqual(nodeCoordsWithValue1[i],tes0.getMesh().getCoordinatesOfNode(0)[i],13);
             self.assertAlmostEqual(nodeCoordsWithValue2[i],tes0.getMesh().getCoordinatesOfNode(1)[i],13);
             pass
-        for i in xrange(6):
+        for i in range(6):
             self.assertAlmostEqual(expected1[i],tes0.getArray().getIJ(0,i),13);
             pass
         del tes0
@@ -1190,7 +1231,7 @@ class MEDLoaderTest3(unittest.TestCase):
         self.assertEqual([0,2,4],tes1.getMesh().getNodalConnectivityIndex().getValues())
         self.assertEqual(2,tes1.getArray().getNumberOfTuples())
         self.assertEqual(3,tes1.getArray().getNumberOfComponents())
-        for i in xrange(6):
+        for i in range(6):
             self.assertAlmostEqual(expected1[i],tes1.getArray().getIJ(0,i),13);
             pass
         m.write(fname,2)
@@ -1209,11 +1250,11 @@ class MEDLoaderTest3(unittest.TestCase):
         self.assertEqual(2,tes2.getArray().getNumberOfTuples())
         self.assertEqual(3,tes2.getArray().getNumberOfComponents())
         expected2=[2.,20.,200.,1.,10.,100.]
-        for i in xrange(3):
+        for i in range(3):
             self.assertAlmostEqual(nodeCoordsWithValue1[i],tes2.getMesh().getCoordinatesOfNode(0)[i],13);
             self.assertAlmostEqual(nodeCoordsWithValue2[i],tes2.getMesh().getCoordinatesOfNode(1)[i],13);
             pass
-        for i in xrange(6):
+        for i in range(6):
             self.assertAlmostEqual(expected2[i],tes2.getArray().getIJ(0,i),13);#compare tes2 and tes3
             pass
         #
@@ -1226,7 +1267,7 @@ class MEDLoaderTest3(unittest.TestCase):
         self.assertEqual([0,2,4],tes3.getMesh().getNodalConnectivityIndex().getValues())
         self.assertEqual(2,tes3.getArray().getNumberOfTuples())
         self.assertEqual(3,tes3.getArray().getNumberOfComponents())
-        for i in xrange(6):
+        for i in range(6):
             self.assertAlmostEqual(expected1[i],tes3.getArray().getIJ(0,i),13);
             pass
         pass
@@ -1527,7 +1568,7 @@ class MEDLoaderTest3(unittest.TestCase):
         fname="Pyfile46.med"
         m=MEDLoaderDataForTest.build2DMesh_3()
         m=m[:10] ; m.setName("mesh")
-        f=m.getMeasureField(ON_CELLS)
+        f=m.getMeasureField(False)
         f=f.buildNewTimeReprFromThis(ONE_TIME,False)
         f.setTime(5.5,3,4)
         f.setName("SemiPartialField")
@@ -1643,15 +1684,15 @@ class MEDLoaderTest3(unittest.TestCase):
         coords=DataArrayDouble([0.,0.,0.,1.,1.,1.,1.,0.,0.,0.5,0.5,1.,1.,0.5,0.5,0.],8,2)
         mQ8=MEDCouplingUMesh("",2) ; mQ8.setCoords(coords)
         mQ8.allocateCells(1)
-        mQ8.insertNextCell(NORM_QUAD8,range(8))
+        mQ8.insertNextCell(NORM_QUAD8,list(range(8)))
         mQ8.finishInsertingCells()
         mQ4=MEDCouplingUMesh("",2) ; mQ4.setCoords(coords)
         mQ4.allocateCells(1)
-        mQ4.insertNextCell(NORM_QUAD4,range(4))
+        mQ4.insertNextCell(NORM_QUAD4,list(range(4)))
         mQ4.finishInsertingCells()
         mT3=MEDCouplingUMesh("",2) ; mT3.setCoords(coords)
         mT3.allocateCells(1)
-        mT3.insertNextCell(NORM_TRI3,range(3))
+        mT3.insertNextCell(NORM_TRI3,list(range(3)))
         mT3.finishInsertingCells()
         
         tr=[[0.,4.],[2.,4.],[4.,4.],[6.,4.],[8.,4.],[10.,4.],[12.,4.],[14.,4.],[16.,4.],[18.,4.],[20.,4.],[0.,0.],[2.,0.], [0.,2.],[2.,2.],[4.,2.],[6.,2.],[8.,2.],[10.,2.],[12.,2.]]
@@ -1684,7 +1725,7 @@ class MEDLoaderTest3(unittest.TestCase):
         mm.write(fname,2)
         #
         f1ts=MEDFileField1TS.New()
-        pfl=DataArrayInt(range(13)) ; pfl.setName("pfl")
+        pfl=DataArrayInt(list(range(13))) ; pfl.setName("pfl")
         self.assertRaises(InterpKernelException,f1ts.setFieldProfile,fInvalid,mm,0,pfl) # fails because no Gauss localization per cell set !
         self.assertRaises(InterpKernelException,f1ts.setFieldProfile,fInvalid2,mm,0,pfl) # fails because no Gauss localization set whereas gauss locid per cell given !
         f1ts.setFieldProfile(f,mm,0,pfl)
@@ -1808,7 +1849,7 @@ class MEDLoaderTest3(unittest.TestCase):
         m1=MEDCouplingUMesh(m0.getName(),1)
         m1.allocateCells(9)
         conn1=[0,1,0,3,3,4,4,1,5,4,2,4,1,2,3,6,5,8]
-        for i in xrange(9):
+        for i in range(9):
             m1.insertNextCell(NORM_SEG2,conn1[2*i:2*i+2])
             pass
         m1.finishInsertingCells()
@@ -1898,7 +1939,7 @@ class MEDLoaderTest3(unittest.TestCase):
         m1=MEDCouplingUMesh(m0.getName(),1)
         m1.allocateCells(9)
         conn1=[0,1,0,3,3,4,4,1,5,4,2,4,1,2,3,6,5,8]
-        for i in xrange(9):
+        for i in range(9):
             m1.insertNextCell(NORM_SEG2,conn1[2*i:2*i+2])
             pass
         m1.finishInsertingCells()
@@ -2020,8 +2061,16 @@ class MEDLoaderTest3(unittest.TestCase):
         mm.setFamiliesOnGroup("grp0",["MyOtherFam"])
         mm.setFamiliesOnGroup("grpA",["MyOther-1"])
         #
+        self.assertTrue(mm.getNodeFamiliesArr(["MyFam","MyOtherFam"]).isEqual(DataArrayInt([1,3,4,12]))) # find family id 2 and 3 into famCoo
+        #
         daTest=DataArrayInt([1,3,4,6,9,10,12]) ; daTest.setName("grp1")
         mm.addNodeGroup(daTest)
+        self.assertTrue(mm.getNodeGroupArr(daTest.getName()).isEqual(daTest)) # the node group has been pushed right before -> now read it
+        self.assertTrue(mm.getNodeGroupsArr(["grp1","grpA"]).isEqual(DataArrayInt([1,3,4,6,9,10,11,12])))#daTest+[11] because 11 is the rank of -1 (MyOther-1) in famCoo
+        #
+        expect1=DataArrayInt([1,4]) ; expect1.setName("MyFam")
+        self.assertTrue(mm.getNodeFamilyArr(expect1.getName()).isEqual(expect1))
+        #
         self.assertTrue(mm.getGroupArr(1,daTest.getName()).isEqual(daTest))
         self.assertTrue(mm.getFamilyFieldAtLevel(1).isEqual(DataArrayInt([6,2,6,8,2,6,5,6,6,7,7,4,8])))
         for lev,arr in [(0,da0),(-1,da1),(-2,da2)]:
@@ -2065,13 +2114,13 @@ class MEDLoaderTest3(unittest.TestCase):
         m=MEDFileUMesh()
         coo=DataArrayDouble(9) ; coo.iota(1.) ; coo.rearrange(3) ; coo.setInfoOnComponents(["aaa [b]","cc [dd]", "e [fff]"])
         m0=MEDCouplingUMesh("toto",2) ; m0.allocateCells(0)
-        for i in xrange(7):
+        for i in range(7):
             m0.insertNextCell(NORM_TRI3,[1,2,1])
             pass
-        for i in xrange(4):
+        for i in range(4):
             m0.insertNextCell(NORM_QUAD4,[1,1,2,0])
             pass
-        for i in xrange(2):
+        for i in range(2):
             m0.insertNextCell(NORM_POLYGON,[0,0,1,1,2,2])
             pass
         m1=MEDCouplingUMesh("toto",1) ; m1.allocateCells(0) ; m1.insertNextCell(NORM_SEG2,[1,6]) ; m1.insertNextCell(NORM_SEG2,[7,3])
@@ -2141,31 +2190,31 @@ class MEDLoaderTest3(unittest.TestCase):
         m.setCoords(arr,arr)
         m=m.buildUnstructured()
         m.setName("mm")
-        f=m.getMeasureField(ON_CELLS)
-        self.assertIn(m.getHeapMemorySize(),xrange(3552-100,3552+100+4*strMulFac))
-        self.assertIn(f.getHeapMemorySize(),xrange(4215-100,4215+100+8*strMulFac))
+        f=m.getMeasureField(False)
+        self.assertIn(m.getHeapMemorySize(), list(range(3552 - 100, 3552 + 100 + 4 * strMulFac)))
+        self.assertIn(f.getHeapMemorySize(), list(range(4215 - 100, 4215 + 100 + 8 * strMulFac)))
         #
         mm=MEDFileUMesh()
         mm.setMeshAtLevel(0,m)
-        self.assertIn(mm.getHeapMemorySize(),xrange(3889-100,3889+100+10*strMulFac))
+        self.assertIn(mm.getHeapMemorySize(), list(range(3889 - 100, 4225 + 100 + 10 * strMulFac)))
         ff=MEDFileField1TS()
         ff.setFieldNoProfileSBT(f)
-        self.assertIn(ff.getHeapMemorySize(),xrange(771-40,771+21+(4+1)*strMulFac))
+        self.assertIn(ff.getHeapMemorySize(), list(range(771 - 40, 871 + 21 + (4 + 1) * strMulFac)))
         #
         fff=MEDFileFieldMultiTS()
         fff.appendFieldNoProfileSBT(f)
-        self.assertIn(fff.getHeapMemorySize(),xrange(815-50,815+30+(6+2)*strMulFac))
+        self.assertIn(fff.getHeapMemorySize(), list(range(815 - 50, 915 + 30 + (6 + 2) * strMulFac)))
         f.setTime(1.,0,-1)
         fff.appendFieldNoProfileSBT(f)
-        self.assertIn(fff.getHeapMemorySize(),xrange(1594-90,1594+50+(10+1)*strMulFac))
-        self.assertIn(fff[0,-1].getHeapMemorySize(),xrange(771-40,771+20+(4+1)*strMulFac))
+        self.assertIn(fff.getHeapMemorySize(), list(range(1594 - 90, 1794 + 50 + (10 + 1) * strMulFac)))
+        self.assertIn(fff[0, -1].getHeapMemorySize(), list(range(771 - 40, 871 + 20 + (4 + 1) * strMulFac)))
         f2=f[:50]
         f2.setTime(2.,1,-1)
         pfl=DataArrayInt.Range(0,50,1) ; pfl.setName("pfl")
         fff.appendFieldProfile(f2,mm,0,pfl)
-        self.assertIn(fff.getHeapMemorySize(),xrange(2348-130,2348+100+(10+2)*strMulFac))
-        self.assertIn(fff.getProfile("pfl").getHeapMemorySize(),xrange(204-10,204+10+2*strMulFac))
-        self.assertIn(fff[1,-1].getHeapMemorySize(),xrange(738-50,738+30+4*strMulFac))
+        self.assertIn(fff.getHeapMemorySize(), list(range(2348 - 130, 2608 + 100 + (10 + 2) * strMulFac)))
+        self.assertIn(fff.getProfile("pfl").getHeapMemorySize(), list(range(204 - 10, 204 + 10 + 2 * strMulFac)))
+        self.assertIn(fff[1, -1].getHeapMemorySize(), list(range(738 - 50, 838 + 30 + 4 * strMulFac)))
         pass
 
     def testCurveLinearMesh1(self):
@@ -2273,20 +2322,20 @@ class MEDLoaderTest3(unittest.TestCase):
         mm.setMeshAtLevel(0,m)
         mm.setMeshAtLevel(-1,m1)
         namesCellL0=DataArrayAsciiChar(6,16)
-        namesCellL0[:]=["CellL0#%.3d      "%(i) for i in xrange(6)]
+        namesCellL0[:] = ["CellL0#%.3d      " % (i) for i in range(6)]
         mm.setNameFieldAtLevel(0,namesCellL0)
         namesCellL1=DataArrayAsciiChar.Aggregate([namesCellL0,namesCellL0,namesCellL0.subArray(2)])
-        namesCellL1[:]=["CellLM1#%.3d     "%(i) for i in xrange(16)]
+        namesCellL1[:] = ["CellLM1#%.3d     " % (i) for i in range(16)]
         mm.setNameFieldAtLevel(-1,namesCellL1)
         namesNodes=namesCellL1.subArray(4,16)
-        namesNodes[:]=["Node#%.3d        "%(i) for i in xrange(12)]
+        namesNodes[:] = ["Node#%.3d        " % (i) for i in range(12)]
         mm.setNameFieldAtLevel(1,namesNodes)
         mm.write(fname,2)
         #
         mmr=MEDFileMesh.New(fname)
-        self.assertTrue(mm.getNameFieldAtLevel(0).isEqual(DataArrayAsciiChar(["CellL0#%.3d      "%(i) for i in xrange(6)])))
-        self.assertTrue(mm.getNameFieldAtLevel(-1).isEqual(DataArrayAsciiChar(["CellLM1#%.3d     "%(i) for i in xrange(16)])))
-        self.assertTrue(mm.getNameFieldAtLevel(1).isEqual(DataArrayAsciiChar(["Node#%.3d        "%(i) for i in xrange(12)])))
+        self.assertTrue(mm.getNameFieldAtLevel(0).isEqual(DataArrayAsciiChar(["CellL0#%.3d      " % (i) for i in range(6)])))
+        self.assertTrue(mm.getNameFieldAtLevel(-1).isEqual(DataArrayAsciiChar(["CellLM1#%.3d     " % (i) for i in range(16)])))
+        self.assertTrue(mm.getNameFieldAtLevel(1).isEqual(DataArrayAsciiChar(["Node#%.3d        " % (i) for i in range(12)])))
         self.assertTrue(mm.isEqual(mmr,1e-12)[0])
         mmr.getNameFieldAtLevel(1).setIJ(0,0,'M')
         self.assertTrue(not mm.isEqual(mmr,1e-12)[0])
@@ -2303,7 +2352,7 @@ class MEDLoaderTest3(unittest.TestCase):
         mm.write(fname,2)
         mmr=MEDFileMesh.New(fname)
         self.assertEqual(mmr.getNameFieldAtLevel(1),None)
-        self.assertTrue(mmr.getNameFieldAtLevel(0).isEqual(DataArrayAsciiChar(["CellL0#%.3d      "%(i) for i in xrange(6)])))
+        self.assertTrue(mmr.getNameFieldAtLevel(0).isEqual(DataArrayAsciiChar(["CellL0#%.3d      " % (i) for i in range(6)])))
         self.assertEqual(mmr.getNameFieldAtLevel(-1),None)
         #
         c=MEDCouplingCMesh()
@@ -2312,12 +2361,12 @@ class MEDLoaderTest3(unittest.TestCase):
         c.setName("cmesh")
         cc=MEDFileCMesh()
         cc.setMesh(c)
-        cc.setNameFieldAtLevel(0,DataArrayAsciiChar(["Cell#%.3d        "%(i) for i in xrange(4)]))
-        cc.setNameFieldAtLevel(1,DataArrayAsciiChar(["Node#%.3d        "%(i) for i in xrange(9)]))
+        cc.setNameFieldAtLevel(0, DataArrayAsciiChar(["Cell#%.3d        " % (i) for i in range(4)]))
+        cc.setNameFieldAtLevel(1, DataArrayAsciiChar(["Node#%.3d        " % (i) for i in range(9)]))
         cc.write(fname2,2)
         ccr=MEDFileMesh.New(fname2)
-        self.assertTrue(ccr.getNameFieldAtLevel(0).isEqual(DataArrayAsciiChar(["Cell#%.3d        "%(i) for i in xrange(4)])))
-        self.assertTrue(ccr.getNameFieldAtLevel(1).isEqual(DataArrayAsciiChar(["Node#%.3d        "%(i) for i in xrange(9)])))
+        self.assertTrue(ccr.getNameFieldAtLevel(0).isEqual(DataArrayAsciiChar(["Cell#%.3d        " % (i) for i in range(4)])))
+        self.assertTrue(ccr.getNameFieldAtLevel(1).isEqual(DataArrayAsciiChar(["Node#%.3d        " % (i) for i in range(9)])))
         self.assertTrue(cc.isEqual(ccr,1e-12)[0])
         ccr.getNameFieldAtLevel(1).setIJ(0,0,'M')
         self.assertTrue(not cc.isEqual(ccr,1e-12)[0])
@@ -2544,11 +2593,11 @@ class MEDLoaderTest3(unittest.TestCase):
         m.setFamilyFieldArr(-2,f0)
         m.setFamilyFieldArr(1,p)
         nbOfFams=len(fns)
-        for i in xrange(nbOfFams):
+        for i in range(nbOfFams):
             m.addFamily(fns[i],fids[i])
             pass
         nbOfGrps=len(grpns)
-        for i in xrange(nbOfGrps):
+        for i in range(nbOfGrps):
             m.setFamiliesIdsOnGroup(grpns[i],famIdsPerGrp[i])
             pass
         m.setName(m2.getName())
@@ -2578,8 +2627,7 @@ class MEDLoaderTest3(unittest.TestCase):
     def testInt32InMEDFileFieldStar1(self):
         fname="Pyfile63.med"
         f1=MEDLoaderDataForTest.buildVecFieldOnCells_1();
-        arr=f1.getArray().convertToIntArr()
-        f1.setArray(None)
+        f1=f1.convertToIntField()
         m1=f1.getMesh()
         mm1=MEDFileUMesh.New()
         mm1.setCoords(m1.getCoords())
@@ -2587,63 +2635,62 @@ class MEDLoaderTest3(unittest.TestCase):
         mm1.setName(m1.getName())
         mm1.write(fname,2)
         ff1=MEDFileIntField1TS()
-        ff1.setFieldNoProfileSBT(f1,arr)
-        a,b=ff1.getFieldOnMeshAtLevel(0,ON_CELLS,mm1)
-        self.assertEqual(b.getInfoOnComponents(),['power [MW/m^3]','density [g/cm^3]','temperature [K]'])
-        self.assertTrue(b.isEqual(arr))
-        self.assertTrue(a.isEqual(f1,1e-12,1e-12))
+        ff1.setFieldNoProfileSBT(f1)
+        a=ff1.getFieldOnMeshAtLevel(0,ON_CELLS,mm1)
+        self.assertEqual(a.getArray().getInfoOnComponents(),['power [MW/m^3]','density [g/cm^3]','temperature [K]'])
+        self.assertTrue(a.isEqual(f1,1e-12,0))
         ff1.write(fname,0)
+        a,b=ff1.getUndergroundDataArrayExt()
+        self.assertEqual(a.getHiddenCppPointer(),ff1.getUndergroundDataArray().getHiddenCppPointer())
+        self.assertEqual(b,[((3,0),(0,2)),((4,0),(2,4)),((6,0),(4,5)),((5,0),(5,6))])
         ff2=MEDFileAnyTypeField1TS.New(fname)
         self.assertEqual(ff2.getName(),"VectorFieldOnCells")
         self.assertEqual(ff2.getTime(),[0,1,2.0])
         self.assertTrue(isinstance(ff2,MEDFileIntField1TS))
-        a,b=ff1.getFieldOnMeshAtLevel(0,ON_CELLS,mm1)
-        self.assertEqual(b.getInfoOnComponents(),['power [MW/m^3]','density [g/cm^3]','temperature [K]'])
-        self.assertTrue(b.isEqual(arr))
-        self.assertTrue(a.isEqual(f1,1e-12,1e-12))
+        a=ff1.getFieldOnMeshAtLevel(ON_CELLS,0,mm1)
+        self.assertEqual(a.getArray().getInfoOnComponents(),['power [MW/m^3]','density [g/cm^3]','temperature [K]'])
+        self.assertTrue(a.isEqual(f1,1e-12,0))
         ff2.setTime(1,2,3.)
         c=ff2.getUndergroundDataArray() ; c*=2
-        ff2.write(fname,0) # 2 time steps in 
+        ff2.write(fname,0) # 2 time steps in
         ffs1=MEDFileAnyTypeFieldMultiTS.New(fname,"VectorFieldOnCells")
         self.assertEqual(ffs1.getTimeSteps(),[(0, 1, 2.0), (1, 2, 3.0)])
         self.assertEqual(len(ffs1),2)
         self.assertTrue(isinstance(ffs1,MEDFileIntFieldMultiTS))
-        a,b=ffs1[2.].getFieldOnMeshAtLevel(0,ON_CELLS,mm1)
-        self.assertTrue(b.isEqual(arr))
-        self.assertTrue(a.isEqual(f1,1e-12,1e-12))
-        a,b=ffs1[2.].getFieldOnMeshAtLevel(0,ON_CELLS,mm1)
-        self.assertTrue(b.isEqual(arr))
-        self.assertTrue(a.isEqual(f1,1e-12,1e-12))
+        a=ffs1[2.].getFieldOnMeshAtLevel(ON_CELLS,0,mm1)
+        self.assertTrue(a.isEqual(f1,1e-12,0))
+        a=ffs1.getFieldOnMeshAtLevel(ON_CELLS,0,1,0,mm1)
+        self.assertTrue(a.isEqual(f1,1e-12,0))
         it=ffs1.__iter__() ; it.next() ; ff2bis=it.next()
-        a,b=ff2bis.getFieldOnMeshAtLevel(0,ON_CELLS,mm1)
-        self.assertTrue(b.isEqual(2*arr))
-        f1.setTime(3.,1,2)
-        self.assertTrue(a.isEqual(f1,1e-12,1e-12))
+        a=ff2bis.getFieldOnMeshAtLevel(0,ON_CELLS,mm1)
+        self.assertTrue(a.getArray().isEqual(2*f1.getArray()))
+        f1.setTime(3.,1,2) ; f1.getArray()[:]*=2
+        self.assertTrue(a.isEqual(f1,1e-12,0)) ; f1.getArray()[:]/=2
         bc=DataArrayInt(6,3) ; bc[:]=0 ; bc.setInfoOnComponents(['power [MW/m^3]','density [g/cm^3]','temperature [K]'])
         for it in ffs1:
-            a,b=it.getFieldOnMeshAtLevel(0,ON_CELLS,mm1)
-            bc+=b
+            a=it.getFieldOnMeshAtLevel(ON_CELLS,0,mm1)
+            bc+=a.getArray()
             pass
-        self.assertTrue(bc.isEqual(3*arr))
-        nf1=MEDCouplingFieldDouble(ON_NODES)
+        self.assertTrue(bc.isEqual(3*f1.getArray()))
+        nf1=MEDCouplingFieldInt(ON_NODES)
         nf1.setTime(9.,10,-1)
         nf1.setMesh(f1.getMesh())
-        narr=DataArrayInt(12,2) ; narr.setInfoOnComponents(["aa [u1]","bbbvv [ppp]"]) ; narr[:,0]=range(12) ; narr[:,1]=2*narr[:,0]
-        nf1.setName("VectorFieldOnNodes")
+        narr=DataArrayInt(12,2) ; narr.setInfoOnComponents(["aa [u1]","bbbvv [ppp]"]) ; narr[:,0]=list(range(12)) ; narr[:,1]=2*narr[:,0]
+        nf1.setName("VectorFieldOnNodes") ; nf1.setArray(narr)
         nff1=MEDFileIntField1TS.New()
-        nff1.setFieldNoProfileSBT(nf1,narr)
+        nff1.setFieldNoProfileSBT(nf1)
         self.assertEqual(nff1.getInfo(),('aa [u1]','bbbvv [ppp]'))
         self.assertEqual(nff1.getTime(),[10,-1,9.0])
         nff1.write(fname,0)
         #
-        nf2=MEDCouplingFieldDouble(ON_NODES)
+        nf2=MEDCouplingFieldInt(ON_NODES)
         nf2.setTime(19.,20,-11)
         nf2.setMesh(f1.getMesh())
-        narr2=DataArrayInt(8,2) ; narr.setInfoOnComponents(["aapfl [u1]","bbbvvpfl [ppp]"]) ; narr2[:,0]=range(8) ; narr2[:,0]+=10  ; narr2[:,1]=3*narr2[:,0]
-        nf2.setName("VectorFieldOnNodesPfl") ; narr2.setName(nf2.getName())
+        narr2=DataArrayInt(8,2) ; narr.setInfoOnComponents(["aapfl [u1]","bbbvvpfl [ppp]"]) ; narr2[:,0]=list(range(8)) ; narr2[:,0]+=10  ; narr2[:,1]=3*narr2[:,0]
+        nf2.setName("VectorFieldOnNodesPfl") ; narr2.setName(nf2.getName()) ; nf2.setArray(narr2)
         nff2=MEDFileIntField1TS.New()
         npfl=DataArrayInt([1,2,4,5,6,7,10,11]) ; npfl.setName("npfl")
-        nff2.setFieldProfile(nf2,narr2,mm1,0,npfl)
+        nff2.setFieldProfile(nf2,mm1,0,npfl)
         nff2.getFieldWithProfile(ON_NODES,0,mm1)
         a,b=nff2.getFieldWithProfile(ON_NODES,0,mm1) ; b.setName(npfl.getName())
         self.assertTrue(b.isEqual(npfl))
@@ -2670,8 +2717,8 @@ class MEDLoaderTest3(unittest.TestCase):
         self.assertTrue(isinstance(ffs[2],MEDFileFieldMultiTS))
         self.assertTrue(isinstance(ffs[3],MEDFileIntFieldMultiTS))
         #
-        self.assertTrue(fs["VectorFieldOnCells"][0].getUndergroundDataArray().isEqualWithoutConsideringStr(arr))
-        self.assertTrue(fs["VectorFieldOnCells"][1,2].getUndergroundDataArray().isEqualWithoutConsideringStr(2*arr))
+        self.assertTrue(fs["VectorFieldOnCells"][0].getUndergroundDataArray().isEqualWithoutConsideringStr(f1.getArray()))
+        self.assertTrue(fs["VectorFieldOnCells"][1,2].getUndergroundDataArray().isEqualWithoutConsideringStr(2*f1.getArray()))
         self.assertTrue(fs["VectorFieldOnNodesPfl"][0].getUndergroundDataArray().isEqualWithoutConsideringStr(narr2))
         self.assertTrue(fs["VectorFieldOnNodes"][9.].getUndergroundDataArray().isEqualWithoutConsideringStr(narr))
         self.assertTrue(fs["VectorFieldOnNodesDouble"][29.].getUndergroundDataArray().isEqualWithoutConsideringStr(f1.getMesh().getCoords(),1e-12))
@@ -2698,7 +2745,7 @@ class MEDLoaderTest3(unittest.TestCase):
         c=DataArrayDouble(12) ; c.iota(); m=MEDCouplingCMesh() ; m.setCoordsAt(0,c) ; m.setName("mesh")
         mm=MEDFileCMesh() ; mm.setMesh(m) ; mm.write(fname,2)
         f1.setMesh(m)
-        arr=DataArrayDouble(12,2) ; arr.setInfoOnComponents(["aa [u1]","bbbvv [ppp]"]) ; arr[:,0]=range(12) ; arr[:,1]=2*arr[:,0]
+        arr=DataArrayDouble(12,2) ; arr.setInfoOnComponents(["aa [u1]","bbbvv [ppp]"]) ; arr[:,0]=list(range(12)) ; arr[:,1]=2*arr[:,0]
         f1.setArray(arr)
         f1.setName("Field1")
         ff1=MEDFileField1TS.New()
@@ -2732,13 +2779,13 @@ class MEDLoaderTest3(unittest.TestCase):
         tri=MEDCouplingUMesh("tri",2)
         tri.allocateCells() ; tri.insertNextCell(NORM_TRI3,[0,1,2])
         tri.setCoords(DataArrayDouble([(0.,0.),(0.,1.),(1.,0.)]))
-        tris=[tri.deepCopy() for i in xrange(4)]
+        tris = [tri.deepCopy() for i in range(4)]
         for i,elt in enumerate(tris): elt.translate([i,0])
         tris=MEDCouplingUMesh.MergeUMeshes(tris)
         quad=MEDCouplingUMesh("quad",2)
         quad.allocateCells() ; quad.insertNextCell(NORM_QUAD4,[0,1,2,3])
         quad.setCoords(DataArrayDouble([(0.,0.),(0.,1.),(1.,1.),(1.,0.)]))
-        quads=[quad.deepCopy() for i in xrange(5)]
+        quads = [quad.deepCopy() for i in range(5)]
         for i,elt in enumerate(quads): elt.translate([5+i,0])
         quads=MEDCouplingUMesh.MergeUMeshes(quads)
         m=MEDCouplingUMesh.MergeUMeshes(tris,quads)
@@ -2747,7 +2794,7 @@ class MEDLoaderTest3(unittest.TestCase):
         fmts0_0=MEDFileFieldMultiTS()
         fmts0_1=MEDFileFieldMultiTS()
         # time steps
-        for i in xrange(10):
+        for i in range(10):
             infos1=["aa [bb]","ccc [ddd]"] ; name1="1stField"
             d=DataArrayDouble(18) ; d.iota(i*10) ; d.rearrange(2) ; d.setInfoOnComponents(infos1)
             f=MEDCouplingFieldDouble(ON_CELLS) ; f.setName(name1) ; f.setArray(d) ; f.setMesh(m)
@@ -2810,13 +2857,13 @@ class MEDLoaderTest3(unittest.TestCase):
         tri=MEDCouplingUMesh("tri",2)
         tri.allocateCells() ; tri.insertNextCell(NORM_TRI3,[0,1,2])
         tri.setCoords(DataArrayDouble([(0.,0.),(0.,1.),(1.,0.)]))
-        tris=[tri.deepCopy() for i in xrange(4)]
+        tris = [tri.deepCopy() for i in range(4)]
         for i,elt in enumerate(tris): elt.translate([i,0])
         tris=MEDCouplingUMesh.MergeUMeshes(tris)
         quad=MEDCouplingUMesh("quad",2)
         quad.allocateCells() ; quad.insertNextCell(NORM_QUAD4,[0,1,2,3])
         quad.setCoords(DataArrayDouble([(0.,0.),(0.,1.),(1.,1.),(1.,0.)]))
-        quads=[quad.deepCopy() for i in xrange(5)]
+        quads = [quad.deepCopy() for i in range(5)]
         for i,elt in enumerate(quads): elt.translate([5+i,0])
         quads=MEDCouplingUMesh.MergeUMeshes(quads)
         m=MEDCouplingUMesh.MergeUMeshes(tris,quads)
@@ -2829,7 +2876,7 @@ class MEDLoaderTest3(unittest.TestCase):
         fmts0_0=MEDFileFieldMultiTS()
         fmts0_1=MEDFileFieldMultiTS()
         # time steps
-        for i in xrange(10):
+        for i in range(10):
             infos1=["aa [bb]","ccc [ddd]"] ; name1="1stField"
             d=DataArrayDouble(14) ; d.iota(i*10) ; d.rearrange(2) ; d.setInfoOnComponents(infos1)
             f=MEDCouplingFieldDouble(ON_CELLS) ; f.setName(name1) ; f.setArray(d) ; f.setMesh(m)
@@ -2856,7 +2903,7 @@ class MEDLoaderTest3(unittest.TestCase):
         self.assertEqual(fs0.getPfls(),('pfl_NORM_QUAD4',))
         #
         fmts0_5=MEDFileFieldMultiTS()
-        for i in xrange(7):
+        for i in range(7):
             infos1=["aa [bb]","ccc [ddd]"] ; name1="1stField"
             d=DataArrayDouble(16) ; d.iota(i*10) ; d.rearrange(2) ; d.setInfoOnComponents(infos1)
             f=MEDCouplingFieldDouble(ON_CELLS) ; f.setName(name1) ; f.setArray(d) ; f.setMesh(m)
@@ -2875,13 +2922,13 @@ class MEDLoaderTest3(unittest.TestCase):
         tri=MEDCouplingUMesh("tri",2)
         tri.allocateCells() ; tri.insertNextCell(NORM_TRI3,[0,1,2])
         tri.setCoords(DataArrayDouble([(0.,0.),(0.,1.),(1.,0.)]))
-        tris=[tri.deepCopy() for i in xrange(4)]
+        tris = [tri.deepCopy() for i in range(4)]
         for i,elt in enumerate(tris): elt.translate([i,0])
         tris=MEDCouplingUMesh.MergeUMeshes(tris)
         quad=MEDCouplingUMesh("quad",2)
         quad.allocateCells() ; quad.insertNextCell(NORM_QUAD4,[0,1,2,3])
         quad.setCoords(DataArrayDouble([(0.,0.),(0.,1.),(1.,1.),(1.,0.)]))
-        quads=[quad.deepCopy() for i in xrange(5)]
+        quads = [quad.deepCopy() for i in range(5)]
         for i,elt in enumerate(quads): elt.translate([5+i,0])
         quads=MEDCouplingUMesh.MergeUMeshes(quads)
         m=MEDCouplingUMesh.MergeUMeshes(tris,quads)
@@ -2895,7 +2942,7 @@ class MEDLoaderTest3(unittest.TestCase):
         fmts0_1=MEDFileFieldMultiTS()
         # time steps
         infos1=['aa [bb]','ccc [ddd]',"ZZZZ [MW*s]"]
-        for i in xrange(10):
+        for i in range(10):
             name1="1stField"
             d=DataArrayDouble(21) ; d.iota(i*10) ; d.rearrange(3) ; d.setInfoOnComponents(infos1)
             f=MEDCouplingFieldDouble(ON_CELLS) ; f.setName(name1) ; f.setArray(d) ; f.setMesh(m)
@@ -2924,7 +2971,7 @@ class MEDLoaderTest3(unittest.TestCase):
         self.assertEqual(fs1.getPfls(),('pfl_NORM_QUAD4',))
         self.assertEqual(fs1.getPflsReallyUsed(),('pfl_NORM_QUAD4',))
         self.assertEqual(4,len(fs1))
-        for i in xrange(10):
+        for i in range(10):
             for j,fieldName in enumerate(['1stField_aa','1stField_ccc','1stField_ZZZZ']):
                 f1ts=fs1[fieldName][i]
                 f=f1ts.getFieldOnMeshAtLevel(ON_CELLS,0,mm)
@@ -2944,13 +2991,13 @@ class MEDLoaderTest3(unittest.TestCase):
         tri=MEDCouplingUMesh("tri",2)
         tri.allocateCells() ; tri.insertNextCell(NORM_TRI3,[0,1,2])
         tri.setCoords(DataArrayDouble([(0.,0.),(0.,1.),(1.,0.)]))
-        tris=[tri.deepCopy() for i in xrange(4)]
+        tris = [tri.deepCopy() for i in range(4)]
         for i,elt in enumerate(tris): elt.translate([i,0])
         tris=MEDCouplingUMesh.MergeUMeshes(tris)
         quad=MEDCouplingUMesh("quad",2)
         quad.allocateCells() ; quad.insertNextCell(NORM_QUAD4,[0,1,2,3])
         quad.setCoords(DataArrayDouble([(0.,0.),(0.,1.),(1.,1.),(1.,0.)]))
-        quads=[quad.deepCopy() for i in xrange(5)]
+        quads = [quad.deepCopy() for i in range(5)]
         for i,elt in enumerate(quads): elt.translate([5+i,0])
         quads=MEDCouplingUMesh.MergeUMeshes(quads)
         m=MEDCouplingUMesh.MergeUMeshes(tris,quads)
@@ -3046,13 +3093,13 @@ class MEDLoaderTest3(unittest.TestCase):
         tri=MEDCouplingUMesh("tri",2)
         tri.allocateCells() ; tri.insertNextCell(NORM_TRI3,[0,1,2])
         tri.setCoords(DataArrayDouble([(0.,0.),(0.,1.),(1.,0.)]))
-        tris=[tri.deepCopy() for i in xrange(30)]
+        tris = [tri.deepCopy() for i in range(30)]
         for i,elt in enumerate(tris): elt.translate([i,0])
         tris=MEDCouplingUMesh.MergeUMeshes(tris)
         quad=MEDCouplingUMesh("quad",2)
         quad.allocateCells() ; quad.insertNextCell(NORM_QUAD4,[0,1,2,3])
         quad.setCoords(DataArrayDouble([(0.,0.),(0.,1.),(1.,1.),(1.,0.)]))
-        quads=[quad.deepCopy() for i in xrange(40)]
+        quads = [quad.deepCopy() for i in range(40)]
         for i,elt in enumerate(quads): elt.translate([40+i,0])
         quads=MEDCouplingUMesh.MergeUMeshes(quads)
         m=MEDCouplingUMesh.MergeUMeshes(tris,quads)
@@ -3082,7 +3129,7 @@ class MEDLoaderTest3(unittest.TestCase):
         self.assertTrue(not ff0.getUndergroundDataArray().isAllocated())
         self.assertEqual(ff0.getUndergroundDataArray().getInfoOnComponents(),['X [km]','YY [mm]'])
         heap_memory_ref=ff0.getHeapMemorySize()
-        self.assertIn(heap_memory_ref,xrange(182,298+2*strMulFac))
+        self.assertIn(heap_memory_ref, list(range(182, 540 + 2 * strMulFac)))
         ff0.loadArrays() ##
         arr=DataArrayDouble(140) ; arr.iota() ; arr.rearrange(2)
         self.assertTrue(ff0.getUndergroundDataArray().isEqualWithoutConsideringStr(arr,1e-14))
@@ -3091,7 +3138,7 @@ class MEDLoaderTest3(unittest.TestCase):
         ff0=MEDFileField1TS(fname,"FieldCellPfl",False)
         self.assertEqual(ff0.getUndergroundDataArray().getInfoOnComponents(),["XX [pm]","YYY [hm]"])
         heap_memory_ref=ff0.getHeapMemorySize()
-        self.assertIn(heap_memory_ref,xrange(350,415+6*strMulFac))
+        self.assertIn(heap_memory_ref, list(range(350, 600 + 6 * strMulFac)))
         ff0.loadArrays() ##
         arr=DataArrayDouble(100) ; arr.iota() ; arr.rearrange(2)
         self.assertTrue(ff0.getUndergroundDataArray().isEqualWithoutConsideringStr(arr,1e-14))
@@ -3109,7 +3156,7 @@ class MEDLoaderTest3(unittest.TestCase):
         self.assertEqual(ff0.getUndergroundDataArray().getIJ(30,1),5.5)
         self.assertTrue(not ff0.getUndergroundDataArray().isEqualWithoutConsideringStr(arr,1e-14))
         heap_memory_ref=ff0.getHeapMemorySize()
-        self.assertIn(heap_memory_ref,xrange(1100,1215+2*strMulFac))
+        self.assertIn(heap_memory_ref, list(range(1100, 1400 + 2 * strMulFac)))
         ff0.unloadArrays()
         hmd=ff0.getHeapMemorySize()-heap_memory_ref
         self.assertEqual(hmd,-800) # -50*8*2
@@ -3118,14 +3165,14 @@ class MEDLoaderTest3(unittest.TestCase):
         #
         ff0=MEDFileField1TS(fname,"FieldCellPfl",-1,-1,False)
         heap_memory_ref=ff0.getHeapMemorySize()
-        self.assertIn(heap_memory_ref,xrange(299,415+6*strMulFac))
+        self.assertIn(heap_memory_ref, list(range(299, 620 + 6 * strMulFac)))
         ff0.loadArrays() ##
         self.assertTrue(ff0.getUndergroundDataArray().isEqualWithoutConsideringStr(arr,1e-14))
         self.assertEqual(ff0.getHeapMemorySize()-heap_memory_ref,50*8*2)
         #
         fieldName="FieldCellMultiTS"
         ff0=MEDFileFieldMultiTS()
-        for t in xrange(20):
+        for t in range(20):
             f0=MEDCouplingFieldDouble(ON_CELLS,ONE_TIME) ; f0.setMesh(m) ; arr=DataArrayDouble(m.getNumberOfCells()*2) ; arr.iota(float(t+1000)) ; arr.rearrange(2) ; arr.setInfoOnComponents(["X [km]","YY [mm]"]) ; f0.setArray(arr) ; f0.setName(fieldName)
             f0.setTime(float(t)+0.1,t,100+t)
             f0.checkConsistencyLight()
@@ -3135,14 +3182,14 @@ class MEDLoaderTest3(unittest.TestCase):
         #
         ff0=MEDFileAnyTypeFieldMultiTS.New(fname,fieldName,False)
         heap_memory_ref=ff0.getHeapMemorySize()
-        self.assertIn(heap_memory_ref,xrange(5536,5956+(80+26)*strMulFac))
+        self.assertIn(heap_memory_ref, list(range(5536, 9212 + (80 + 26 + 1) * strMulFac)))
         ff0.loadArrays()
         self.assertEqual(ff0.getHeapMemorySize()-heap_memory_ref,20*70*8*2)
         del ff0
         #
         ffs=MEDFileFields(fname,False)
         heap_memory_ref=ffs.getHeapMemorySize()
-        self.assertIn(heap_memory_ref,xrange(5335,6687+(80+50)*strMulFac))
+        self.assertIn(heap_memory_ref, list(range(5335, 10031 + (80 + 50 + len(ffs)) * strMulFac)))
         ffs.loadArrays()
         self.assertEqual(ffs.getHeapMemorySize()-heap_memory_ref,20*70*8*2+70*8*2+50*8*2)
         pass
@@ -3314,13 +3361,13 @@ class MEDLoaderTest3(unittest.TestCase):
         tri=MEDCouplingUMesh("tri",2)
         tri.allocateCells() ; tri.insertNextCell(NORM_TRI3,[0,1,2])
         tri.setCoords(DataArrayDouble([(0.,0.),(0.,1.),(1.,0.)]))
-        tris=[tri.deepCopy() for i in xrange(4)]
+        tris = [tri.deepCopy() for i in range(4)]
         for i,elt in enumerate(tris): elt.translate([i,0])
         tris=MEDCouplingUMesh.MergeUMeshes(tris)
         quad=MEDCouplingUMesh("quad",2)
         quad.allocateCells() ; quad.insertNextCell(NORM_QUAD4,[0,1,2,3])
         quad.setCoords(DataArrayDouble([(0.,0.),(0.,1.),(1.,1.),(1.,0.)]))
-        quads=[quad.deepCopy() for i in xrange(5)]
+        quads = [quad.deepCopy() for i in range(5)]
         for i,elt in enumerate(quads): elt.translate([5+i,0])
         quads=MEDCouplingUMesh.MergeUMeshes(quads)
         m=MEDCouplingUMesh.MergeUMeshes(tris,quads)
@@ -3429,13 +3476,13 @@ class MEDLoaderTest3(unittest.TestCase):
         tri=MEDCouplingUMesh("tri",2)
         tri.allocateCells() ; tri.insertNextCell(NORM_TRI3,[0,1,2])
         tri.setCoords(DataArrayDouble([(0.,0.),(0.,1.),(1.,0.)]))
-        tris=[tri.deepCopy() for i in xrange(4)]
+        tris = [tri.deepCopy() for i in range(4)]
         for i,elt in enumerate(tris): elt.translate([i,0])
         tris=MEDCouplingUMesh.MergeUMeshes(tris)
         quad=MEDCouplingUMesh("quad",2)
         quad.allocateCells() ; quad.insertNextCell(NORM_QUAD4,[0,1,2,3])
         quad.setCoords(DataArrayDouble([(0.,0.),(0.,1.),(1.,1.),(1.,0.)]))
-        quads=[quad.deepCopy() for i in xrange(5)]
+        quads = [quad.deepCopy() for i in range(5)]
         for i,elt in enumerate(quads): elt.translate([5+i,0])
         quads=MEDCouplingUMesh.MergeUMeshes(quads)
         m=MEDCouplingUMesh.MergeUMeshes(tris,quads)
@@ -3513,7 +3560,7 @@ class MEDLoaderTest3(unittest.TestCase):
         m00=MEDCouplingUMesh("mesh",1) ; m00.setCoords(m0.getCoords()) ; m00.allocateCells(0)
         m=MEDFileUMesh()
         m.setMeshAtLevel(0,m00)
-        m.setRenumFieldArr(1,DataArrayInt(range(10,26)))
+        m.setRenumFieldArr(1,DataArrayInt(list(range(10,26))))
         m.setFamilyFieldArr(1,DataArrayInt([-1,-1,-1,-1,-1,-2,-2,-2,-2,-2,-2,0,-1,-3,-3,-3]))
         m.write(fname,2)
         del m,a,c,m0,m00
@@ -3521,7 +3568,7 @@ class MEDLoaderTest3(unittest.TestCase):
         m=MEDFileMesh.New(fname)
         self.assertEqual((),m.getNonEmptyLevels())
         self.assertTrue(m.getCoords().isEqual(DataArrayDouble([(0,0),(1,0),(2,0),(3,0),(0,1),(1,1),(2,1),(3,1),(0,2),(1,2),(2,2),(3,2),(0,3),(1,3),(2,3),(3,3)]),1e-12))
-        self.assertTrue(m.getNumberFieldAtLevel(1).isEqual(DataArrayInt(range(10,26))))
+        self.assertTrue(m.getNumberFieldAtLevel(1).isEqual(DataArrayInt(list(range(10,26)))))
         self.assertTrue(m.getFamilyFieldAtLevel(1).isEqual(DataArrayInt([-1,-1,-1,-1,-1,-2,-2,-2,-2,-2,-2,0,-1,-3,-3,-3])))
         pass
 
@@ -3531,14 +3578,14 @@ class MEDLoaderTest3(unittest.TestCase):
         m.insertNextCell([0,2,1,3])
         m.setCoords(DataArrayDouble([0.,0.,1.,1.,1.,0.,0.,1.],4,2))
         #
-        ms=[m.deepCopy() for i in xrange(4)]
+        ms = [m.deepCopy() for i in range(4)]
         for i,elt in enumerate(ms):
             elt.translate([float(i)*1.5,0.])
             pass
         m0=MEDCoupling1SGTUMesh.Merge1SGTUMeshes(ms).buildUnstructured()
         m0.convertAllToPoly()
         #
-        ms=[m.deepCopy() for i in xrange(5)]
+        ms = [m.deepCopy() for i in range(5)]
         for i,elt in enumerate(ms):
             elt.translate([float(i)*1.5,1.5])
             pass
@@ -3706,7 +3753,7 @@ class MEDLoaderTest3(unittest.TestCase):
         pass
 
     def testMEDFileUMeshSetName(self):
-        """ This test is a small but important one for MEDReader in sauv mode. When .sauv file is loaded the convertion is performed in memory and a preparation is done then.
+        """ This test is a small but important one for MEDReader in sauv mode. When .sauv file is loaded the conversion is performed in memory and a preparation is done then.
         This preparation makes access to internal MEDCouplingMesh pointers whose name must be updated.
         """
         fname="Pyfile79.med"
@@ -3756,7 +3803,7 @@ class MEDLoaderTest3(unittest.TestCase):
         #
         fmts=MEDFileFieldMultiTS()
         #
-        for i in xrange(nbCells):
+        for i in range(nbCells):
             t=(float(i)+0.1,i+1,-i-2)
             f.setTime(*t)
             arr2=DataArrayDouble(nbCells)
@@ -3825,7 +3872,7 @@ class MEDLoaderTest3(unittest.TestCase):
         renum0=DataArrayInt([3,6,7,10,11,0,2,1,9,8,5,4,12,13,14,24,23,22,21,20,19,18,17,16,15])
         famField0=DataArrayInt([-3,-6,-7,-10,-11,0,-2,-1,-9,-8,-5,-4,-12,-13,-14,-24,-23,-22,-21,-20,-19,-18,-17,-16,-15])
         namesCellL0=DataArrayAsciiChar(25,16)
-        namesCellL0[:]=["Cell#%.3d        "%(i) for i in xrange(25)]
+        namesCellL0[:] = ["Cell#%.3d        " % (i) for i in range(25)]
         renumM1=DataArrayInt([3,4,0,2,1])
         famFieldM1=DataArrayInt([-3,-4,0,-2,-1])
         mm.setRenumFieldArr(0,renum0)
@@ -3836,7 +3883,7 @@ class MEDLoaderTest3(unittest.TestCase):
         renum1=DataArrayInt([13,16,17,20,21,10,12,11,19,18,15,14,22,23,24,34,33,32,31,30,29,28,27,26,25,45,44,43,42,41,40,39,38,37,36,35])
         famField1=DataArrayInt([-13,-16,-17,-20,-21,-10,-12,-11,-19,-18,-15,-14,-22,-23,-24,-34,-33,-32,-31,-30,-29,-28,-27,-26,-25,-45,-44,-43,-42,-41,-40,-39,-38,-37,-36,-35])
         namesNodes=DataArrayAsciiChar(36,16)
-        namesNodes[:]=["Node#%.3d        "%(i) for i in xrange(36)]
+        namesNodes[:] = ["Node#%.3d        " % (i) for i in range(36)]
         mm.setRenumFieldArr(1,renum1)
         mm.setFamilyFieldArr(1,famField1)
         mm.setNameFieldAtLevel(1,namesNodes)
@@ -3904,15 +3951,15 @@ class MEDLoaderTest3(unittest.TestCase):
         f=MEDCouplingFieldDouble(ON_CELLS,ONE_TIME) ; f.setMesh(m)
         f.setName("Field")
         arr=DataArrayDouble(25,2) ; arr.setInfoOnComponents(compos)
-        arr[:,0]=range(25)
-        arr[:,1]=range(100,125)
+        arr[:,0]=list(range(25))
+        arr[:,1]=list(range(100,125))
         f.setArray(arr)
-        WriteField(fileName,f,2)
+        WriteField(fileName,f,True)
         f=MEDCouplingFieldDouble(ON_NODES,ONE_TIME) ; f.setMesh(m)
         f.setName("FieldNode")
         arr=DataArrayDouble(36,2) ; arr.setInfoOnComponents(compos)
-        arr[:,0]=range(200,236)
-        arr[:,1]=range(300,336)
+        arr[:,0]=list(range(200,236))
+        arr[:,1]=list(range(300,336))
         f.setArray(arr)
         f.checkConsistencyLight()
         WriteFieldUsingAlreadyWrittenMesh(fileName,f)
@@ -3929,11 +3976,11 @@ class MEDLoaderTest3(unittest.TestCase):
         fs=MEDFileFields.LoadPartOf(fileName,False,ms)
         fs=fs.deepCopy()
         fs[0][0].loadArrays()
-        arr=DataArrayDouble(12,2) ; arr[:,0]=range(3,15) ; arr[:,1]=range(103,115)
+        arr = DataArrayDouble(12, 2) ; arr[:, 0] = list(range(3, 15)) ; arr[:, 1] = list(range(103, 115))
         arr.setInfoOnComponents(compos)
         self.assertTrue(fs[0][0].getUndergroundDataArray().isEqual(arr,1e-12))
         fs[1][0].loadArrays()
-        arr=DataArrayDouble(21,2) ; arr[:,0]=range(203,224) ; arr[:,1]=range(303,324)
+        arr = DataArrayDouble(21, 2) ; arr[:, 0] = list(range(203, 224)) ; arr[:, 1] = list(range(303, 324))
         arr.setInfoOnComponents(compos)
         self.assertTrue(fs[1][0].getUndergroundDataArray().isEqual(arr,1e-12))
         pass
@@ -3969,15 +4016,15 @@ class MEDLoaderTest3(unittest.TestCase):
         f=MEDCouplingFieldDouble(ON_CELLS,ONE_TIME) ; f.setMesh(m)
         f.setName("Field")
         arr=DataArrayDouble(25,2) ; arr.setInfoOnComponents(compos)
-        arr[:,0]=range(25)
-        arr[:,1]=range(100,125)
+        arr[:,0]=list(range(25))
+        arr[:,1]=list(range(100,125))
         f.setArray(arr)
-        WriteField(fileName,f,2)
+        WriteField(fileName,f,True)
         f=MEDCouplingFieldDouble(ON_NODES,ONE_TIME) ; f.setMesh(m)
         f.setName("FieldNode")
         arr=DataArrayDouble(36,2) ; arr.setInfoOnComponents(compos)
-        arr[:,0]=range(200,236)
-        arr[:,1]=range(300,336)
+        arr[:,0]=list(range(200,236))
+        arr[:,1]=list(range(300,336))
         f.setArray(arr)
         f.checkConsistencyLight()
         WriteFieldUsingAlreadyWrittenMesh(fileName,f)
@@ -4101,7 +4148,6 @@ class MEDLoaderTest3(unittest.TestCase):
 
     @unittest.skipUnless(MEDCouplingHasNumPyBindings(),"requires numpy")
     def testMEDFileUMeshPickeling1(self):
-        import cPickle
         outFileName="Pyfile86.med"
         c=DataArrayDouble([-0.3,-0.3, 0.2,-0.3, 0.7,-0.3, -0.3,0.2, 0.2,0.2, 0.7,0.2, -0.3,0.7, 0.2,0.7, 0.7,0.7 ],9,2)
         c.setInfoOnComponents(["aa","bbb"])
@@ -4163,10 +4209,10 @@ class MEDLoaderTest3(unittest.TestCase):
         g2_1.setName("G2")
         mm.setGroupsAtLevel(-1,[g1_1,g2_1],False)
         g1_N=DataArrayInt.New()
-        g1_N.setValues(range(8),8,1)
+        g1_N.setValues(list(range(8)),8,1)
         g1_N.setName("G1")
         g2_N=DataArrayInt.New()
-        g2_N.setValues(range(9),9,1)
+        g2_N.setValues(list(range(9)),9,1)
         g2_N.setName("G2")
         mm.setGroupsAtLevel(1,[g1_N,g2_N],False)
         mm.createGroupOnAll(0,"GrpOnAllCell")
@@ -4186,14 +4232,14 @@ class MEDLoaderTest3(unittest.TestCase):
         self.assertTrue(mm.existsGroup("GrpOnAllCell"));
         t=mm.getGroupArr(0,"GrpOnAllCell")
         #
-        st=cPickle.dumps(mm,cPickle.HIGHEST_PROTOCOL)
-        mm2=cPickle.loads(st)
+        st=pickle.dumps(mm,pickle.HIGHEST_PROTOCOL)
+        mm2=pickle.loads(st)
         self.assertTrue(mm.isEqual(mm2,1e-12)[0])
         self.assertEqual(mm.getAxisType(),AX_CART)
         #
         mm.setAxisType(AX_CYL)
-        st=cPickle.dumps(mm,cPickle.HIGHEST_PROTOCOL)
-        mm2=cPickle.loads(st)
+        st=pickle.dumps(mm,pickle.HIGHEST_PROTOCOL)
+        mm2=pickle.loads(st)
         self.assertTrue(mm.isEqual(mm2,1e-12)[0])
         self.assertEqual(mm2.getAxisType(),AX_CYL)
         pass
@@ -4212,7 +4258,7 @@ class MEDLoaderTest3(unittest.TestCase):
         m.setName(meshName)
         #
         fmts=MEDFileFieldMultiTS()
-        for i in xrange(nbPdt):
+        for i in range(nbPdt):
             f=MEDCouplingFieldDouble(ON_NODES)
             f.setMesh(m)
             arr=DataArrayDouble(nbNodes) ; arr.iota() ; arr*=i
@@ -4230,14 +4276,14 @@ class MEDLoaderTest3(unittest.TestCase):
         fs2=MEDFileFields.LoadSpecificEntities(fileName,[(ON_NODES,NORM_ERROR)],False)
         fs.loadArraysIfNecessary()
         fs2.loadArraysIfNecessary()
-        for i in xrange(nbPdt):
+        for i in range(nbPdt):
             self.assertTrue(fs[fieldName][i].getUndergroundDataArray().isEqual(fs2[fieldName][i].getUndergroundDataArray(),1e-12))
             pass
         m1=MEDCouplingCMesh() ; m1.setCoords(DataArrayDouble([0,1,2,3]),DataArrayDouble([0,1])) ; m1=m1.buildUnstructured() ; m1.simplexize(0)
         m2=MEDCouplingCMesh() ; m2.setCoords(DataArrayDouble([3,4,5]),DataArrayDouble([0,1])) ; m2=m2.buildUnstructured()
         m3=MEDCouplingUMesh.MergeUMeshes(m1,m2) ; m3.setName(meshName)
         fmts=MEDFileFieldMultiTS()
-        for i in xrange(nbPdt):
+        for i in range(nbPdt):
             f=MEDCouplingFieldDouble(ON_CELLS)
             f.setMesh(m3)
             arr=DataArrayDouble(8) ; arr.iota() ; arr*=i
@@ -4260,7 +4306,7 @@ class MEDLoaderTest3(unittest.TestCase):
         fs2.loadArraysIfNecessary()
         fs3.loadArraysIfNecessary()
         fs4.loadArraysIfNecessary()
-        for i in xrange(nbPdt):
+        for i in range(nbPdt):
             self.assertTrue(fs[fieldName][i].getUndergroundDataArray()[:6].isEqual(fs2[fieldName][i].getUndergroundDataArray(),1e-12))
             self.assertTrue(fs[fieldName][i].getUndergroundDataArray()[6:8].isEqual(fs3[i].getUndergroundDataArray(),1e-12))
             self.assertTrue(fs[fieldName][i].getUndergroundDataArray().isEqual(fs4[fieldName][i].getUndergroundDataArray(),1e-12))
@@ -4281,12 +4327,12 @@ class MEDLoaderTest3(unittest.TestCase):
         m=m.buildUnstructured()
         m.setName(meshName)
         #
-        nbOfField=nbPdt/maxPdt
+        nbOfField=nbPdt//maxPdt
         fs=MEDFileFields()
-        for j in xrange(nbOfField):
+        for j in range(nbOfField):
             fmts=MEDFileFieldMultiTS()
             s=DataArray.GetSlice(slice(0,nbPdt,1),j,nbOfField)
-            for i in xrange(s.start,s.stop,s.step):
+            for i in range(s.start, s.stop, s.step):
                 f=MEDCouplingFieldDouble(ON_NODES)
                 f.setMesh(m)
                 arr=DataArrayDouble(nbNodes) ; arr.iota() ; arr*=i
@@ -4334,13 +4380,13 @@ class MEDLoaderTest3(unittest.TestCase):
             fmts2.reverse()
             zeResu=fmts2.pop()
             nbIter=len(fmts2)
-            for ii in xrange(nbIter):
+            for ii in range(nbIter):
                 zeResu.pushBackTimeSteps(fmts2.pop())
                 pass
             zeResu.setName(k)
             fs2.pushField(zeResu)
             pass
-        self.assertEqual(fs2[0].getTimeSteps(),[(i,0,float(i)) for i in xrange(nbPdt)])
+        self.assertEqual(fs2[0].getTimeSteps(), [(i, 0, float(i)) for i in range(nbPdt)])
         pass
     
     def testMEDFileMeshRearrangeFamIds1(self):
@@ -4522,8 +4568,7 @@ class MEDLoaderTest3(unittest.TestCase):
             grpExp=grp+delta ; grpExp.setName("%s_node"%grp.getName())
             self.assertTrue(mm.getGroupArr(1,"%s_node"%grp.getName()).isEqual(grpExp))
         pass
-
-    pass
+    
     def testMEDFileJoint1(self):
         fileName="Pyfile92.med"
         coo=DataArrayDouble([(0,0,0),(1,0,0),(2,0,0)])
@@ -4561,8 +4606,8 @@ class MEDLoaderTest3(unittest.TestCase):
         self.assertRaises( InterpKernelException, jointsR.getJointAtPos,1)
         self.assertRaises( InterpKernelException, jointsR.destroyJointAtPos,1)
         jointsR.destroyJointAtPos(0)
-        
-    pass
+        pass
+    
     def testMEDFileJoint2(self):
         fileNameWr="Pyfile93.med"
         coo=DataArrayDouble([(0,0,0),(1,0,0),(2,0,0)])
@@ -4655,32 +4700,7 @@ class MEDLoaderTest3(unittest.TestCase):
         """ EDF11242 : check status of MED file calls to detect problems immediately. Sorry this test generates awful messages !"""
         fname="Pyfile94.med"
         errfname="Pyfile94.err"
-        class StdOutRedirect(object):
-            def __init__(self,fileName):
-                import os,sys
-                sys.stderr.flush()
-                self.stdoutOld=os.dup(2)
-                self.fdOfSinkFile=os.open(fileName,os.O_CREAT | os.O_RDWR)
-                fd2=os.dup2(self.fdOfSinkFile,2)
-                self.origPyVal=sys.stderr
-                class FlushFile(object):
-                    def __init__(self,f):
-                        self.f=f
-                    def write(self,st):
-                        self.f.write(st)
-                        self.f.flush()
-                    def flush(self):
-                        return self.f.flush()
-                    def isatty(self):
-                        return self.f.isatty()
-                sys.stderr=FlushFile(os.fdopen(self.fdOfSinkFile,"w"))
-            def __del__(self):
-                import os,sys
-                sys.stderr=self.origPyVal
-                #os.fsync(self.fdOfSinkFile)
-                os.fsync(2)
-                os.dup2(self.stdoutOld,2)
-                os.close(self.stdoutOld)
+        
         import os
         # first clean file if needed
         if os.path.exists(fname):
@@ -4695,7 +4715,7 @@ class MEDLoaderTest3(unittest.TestCase):
         mm.setName("mesh")
         mm.write(fname,2)
         # third : change permissions to remove write access on created file
-        os.chmod(fname,0444)
+        os.chmod(fname, 0o444)
         # four : try to append data on file -> check that it raises Exception
         f=MEDCouplingFieldDouble(ON_CELLS)
         f.setName("field")
@@ -4730,7 +4750,7 @@ class MEDLoaderTest3(unittest.TestCase):
         mm=MEDFileCMesh(fname)
         self.assertTrue(mm.getUnivName()!="")
         pass
-
+    
     def testEmptyMesh(self):
       """ MEDLoader should be able to consistently write and read an empty mesh (coords array
       with 0 tuples """
@@ -4764,11 +4784,10 @@ class MEDLoaderTest3(unittest.TestCase):
       grp2=bary1.findIdsInRange(0.-1e-12,0.+1e-12) ; grp2.setName(grpName2)
       mesh.setGroupsAtLevel(-1,[grp1,grp2])
       
-      import cPickle
-      st=cPickle.dumps(mesh,2)
-      mm=cPickle.loads(st)
-      st2=cPickle.dumps(mm,2)
-      mm2=cPickle.loads(st2)
+      st=pickle.dumps(mesh,2)
+      mm=pickle.loads(st)
+      st2=pickle.dumps(mm,2)
+      mm2=pickle.loads(st2)
       self.assertTrue(mesh.isEqual(mm2,1e-12)[0])
       pass
 
@@ -4852,7 +4871,7 @@ class MEDLoaderTest3(unittest.TestCase):
       self.assertEqual(mm.getFamiliesIdsOnGroup("RID"),(-4,3))
       mm.write(fileName,2)
       # now read such funny file !
-      mm2=MEDFileMesh.New(fileName) # <- normaly mdump of Pyfile98.med must contain only RID and FAMILLE_ZERO families.
+      mm2=MEDFileMesh.New(fileName) # <- normally mdump of Pyfile98.med must contain only RID and FAMILLE_ZERO families.
       self.assertTrue(mm.isEqual(mm2,1e-16))
       self.assertEqual(mm2.getFamiliesNames(),("FAMILLE_ZERO",'RIDF!/__\\!0000','RIDF!/__\\!0001'))
       self.assertEqual(mm2.getFamiliesNamesWithFilePointOfView(),("FAMILLE_ZERO","RIDF","RIDF"))
@@ -5101,11 +5120,11 @@ class MEDLoaderTest3(unittest.TestCase):
       fmts=MEDFileIntFieldMultiTS()
       pflName="PFL"
       pfl=DataArrayInt([1,3,5]) ; pfl.setName(pflName)
-      f=MEDCouplingFieldDouble(ON_CELLS) ; f.setMesh(mesh)
+      f=MEDCouplingFieldInt(ON_CELLS) ; f.setMesh(mesh)
       fieldName="FieldOnCell"
       f.setTime(1.2,1,1) ; f.setName(fieldName)
-      arr=DataArrayInt([101,102,103])
-      fmts.appendFieldProfile(f,arr,mm,0,pfl)
+      arr=DataArrayInt([101,102,103]) ; f.setArray(arr)
+      fmts.appendFieldProfile(f,mm,0,pfl)
       #
       mm.write(fname,2)
       fmts.write(fname,0)
@@ -5120,13 +5139,1102 @@ class MEDLoaderTest3(unittest.TestCase):
       self.assertEqual(pfltest.getName(),pflName)
       self.assertEqual(ftest.getName(),fieldName)
       self.assertTrue(ftest.isEqualWithoutConsideringStr(arr))
-      ftest2,vals=f1ts.getFieldOnMeshAtLevel(ON_CELLS,0,mm)
-      self.assertTrue(vals.isEqualWithoutConsideringStr(arr))
+      ftest2=f1ts.getFieldOnMeshAtLevel(ON_CELLS,0,mm)
+      self.assertTrue(ftest2.getArray().isEqualWithoutConsideringStr(arr))
       self.assertEqual(ftest2.getTime(),f.getTime())
       self.assertEqual(ftest2.getMesh().getNumberOfCells(),len(arr))
       pass
 
+    def testMEDFileFieldEasyField1(self):
+      """Check for all spatial discretization of field (cells,nodes,elno,gauss) for double field that all is OK. Here no profile and only top level is considered."""
+      ## Basic test on cells on top level
+      fname="Pyfile101.med"
+      fieldName="field1"
+      mm=MEDFileUMesh()
+      coo=DataArrayDouble([(3,2,1),(8,7,6),(5,9,10)])
+      m=MEDCouplingUMesh("mesh",2) ; m.setCoords(coo)
+      m.allocateCells()
+      m.insertNextCell(NORM_TRI3,[0,1,2])
+      m.insertNextCell(NORM_TRI3,[3,4,5])
+      m.insertNextCell(NORM_TRI3,[6,7,8])
+      m.insertNextCell(NORM_TRI3,[9,10,11])
+      m.insertNextCell(NORM_QUAD4,[100,101,102,103])
+      m.insertNextCell(NORM_QUAD4,[104,105,106,107])
+      mm[0]=m
+      mm.write(fname,2)
+      arr0=DataArrayDouble([10,11,12,13,100,101])
+      f=MEDCouplingFieldDouble(ON_CELLS) ; f.setArray(arr0) ; f.setMesh(m)
+      f.setName(fieldName) ; f.setTime(2.,6,7)
+      f0=f.deepCopy()
+      ff=MEDFileFieldMultiTS() ; ff.appendFieldNoProfileSBT(f)
+      ff.write(fname,0)
+      arr2=arr0+1000 ; f.setArray(arr2)
+      f.setTime(3.,8,9) ; ff=MEDFileField1TS() ; ff.setFieldNoProfileSBT(f)
+      ff.write(fname,0)
+      f1=f.deepCopy()
+      ##
+      mm=MEDFileMesh.New(fname)
+      f1ts=MEDFileField1TS(fname,fieldName,6,7)
+      ftst0=f1ts.field(mm)
+      self.assertTrue(f0.isEqual(ftst0,1e-12,1e-12))
+      f1ts=MEDFileField1TS(fname,fieldName,8,9)
+      ftst1=f1ts.field(mm)
+      self.assertTrue(f1.isEqual(ftst1,1e-12,1e-12))
+      fmts=MEDFileFieldMultiTS(fname,fieldName)
+      self.assertTrue(f1.isEqual(fmts.field(8,9,mm),1e-12,1e-12))
+      ## Basic test on nodes on top level
+      f2=MEDCouplingFieldDouble(ON_NODES) ; arr2=DataArrayDouble([200,201,202]) ; arr2.setInfoOnComponent(0,"tutu") ; f2.setArray(arr2) ; f2.setMesh(m) ; f2.setTime(22.,23,24)
+      f2.setName(fieldName)
+      mm.write(fname,2)
+      ff=MEDFileField1TS() ; ff.setFieldNoProfileSBT(f2) ; ff.write(fname,0)
+      #
+      mm=MEDFileMesh.New(fname)
+      f1ts=MEDFileField1TS(fname,fieldName,23,24)
+      self.assertTrue(f2.isEqual(f1ts.field(mm),1e-12,1e-12))
+      fmts=MEDFileFieldMultiTS(fname,fieldName)
+      self.assertTrue(f2.isEqual(fmts.field(23,24,mm),1e-12,1e-12))
+      ## Node on elements
+      f3=MEDCouplingFieldDouble(ON_GAUSS_NE) ; f3.setMesh(m) ; arr3=DataArrayDouble([0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19]) ; f3.setArray(arr3) ; f3.setTime(0.5,2,3)
+      f3.setName(fieldName) ; f3.checkConsistencyLight()
+      mm.write(fname,2) ; ff=MEDFileField1TS() ; ff.setFieldNoProfileSBT(f3) ; ff.write(fname,0)
+      #
+      mm=MEDFileMesh.New(fname)
+      f1ts=MEDFileField1TS(fname,fieldName,2,3)
+      self.assertTrue(f3.isEqual(f1ts.field(mm),1e-12,1e-12))
+      ## Gauss
+      f4=MEDCouplingFieldDouble(ON_GAUSS_PT) ; f4.setMesh(m) ; f4.setName(fieldName)
+      f4.setGaussLocalizationOnType(NORM_TRI3,[0.,0.,1.,0.,1.,1.],[0.1,0.1, 0.2,0.2, 0.3,0.3, 0.4,0.4, 0.5,0.5],[0.2,0.3,0.1,0.05,0.35])
+      f4.setGaussLocalizationOnType(NORM_QUAD4,[0.,0.,1.,0.,1.,1.,0.,1.],[0.3,0.4, 0.6,0.7],[0.7,0.3]) ; f4.setTime(0.25,4,5)
+      arr4=DataArrayDouble([0,1,2,3,4 ,10,11,12,13,14, 20,21,22,23,24, 30,31,32,33,34, 45,46, 55,56]) ; arr4.setInfoOnComponent(0,"abc") ; f4.setArray(arr4)
+      f4.checkConsistencyLight()
+      mm.write(fname,2) ; ff=MEDFileField1TS() ; ff.setFieldNoProfileSBT(f4) ; ff.write(fname,0)
+      #
+      mm=MEDFileMesh.New(fname)
+      f1ts=MEDFileField1TS(fname,fieldName,4,5)
+      self.assertTrue(f4.isEqual(f1ts.field(mm),1e-12,1e-12))
+      pass
+  
+    def testMEDFileFieldEasyField2(self):
+        """Same thantestMEDFileFieldEasyField1 except that here intfields are considered.
+        Check for all spatial discretization of field (cells,nodes,elno,gauss) for int field that all is OK. Here no profile and only top level is considered."""
+        ## Basic test on cells on top level
+        fname="Pyfile102.med"
+        fieldName="field1"
+        mm=MEDFileUMesh()
+        coo=DataArrayDouble([(3,2,1),(8,7,6),(5,9,10)])
+        m=MEDCouplingUMesh("mesh",2) ; m.setCoords(coo)
+        m.allocateCells()
+        m.insertNextCell(NORM_TRI3,[0,1,2])
+        m.insertNextCell(NORM_TRI3,[3,4,5])
+        m.insertNextCell(NORM_TRI3,[6,7,8])
+        m.insertNextCell(NORM_TRI3,[9,10,11])
+        m.insertNextCell(NORM_QUAD4,[100,101,102,103])
+        m.insertNextCell(NORM_QUAD4,[104,105,106,107])
+        mm[0]=m
+        mm.write(fname,2)
+        arr0=DataArrayInt([10,11,12,13,100,101])
+        f=MEDCouplingFieldInt(ON_CELLS) ; f.setArray(arr0) ; f.setMesh(m)
+        f.setName(fieldName) ; f.setTime(2.,6,7)
+        f0=f.deepCopy()
+        ff=MEDFileIntFieldMultiTS() ; ff.appendFieldNoProfileSBT(f)
+        ff.write(fname,0)
+        arr2=arr0+1000 ; f.setArray(arr2)
+        f.setTime(3.,8,9) ; ff=MEDFileIntField1TS() ; ff.setFieldNoProfileSBT(f)
+        ff.write(fname,0)
+        f1=f.deepCopy()
+        ##
+        mm=MEDFileMesh.New(fname)
+        f1ts=MEDFileIntField1TS(fname,fieldName,6,7)
+        ftst0=f1ts.field(mm)
+        self.assertTrue(f0.isEqual(ftst0,1e-12,0))
+        f1ts=MEDFileIntField1TS(fname,fieldName,8,9)
+        ftst1=f1ts.field(mm)
+        self.assertTrue(f1.isEqual(ftst1,1e-12,0))
+        fmts=MEDFileIntFieldMultiTS(fname,fieldName)
+        self.assertTrue(f1.isEqual(fmts.field(8,9,mm),1e-12,0))
+        ## Basic test on nodes on top level
+        f2=MEDCouplingFieldInt(ON_NODES) ; arr2=DataArrayInt([200,201,202]) ; arr2.setInfoOnComponent(0,"tutu") ; f2.setArray(arr2) ; f2.setMesh(m) ; f2.setTime(22.,23,24)
+        f2.setName(fieldName)
+        mm.write(fname,2)
+        ff=MEDFileIntField1TS() ; ff.setFieldNoProfileSBT(f2) ; ff.write(fname,0)
+        #
+        mm=MEDFileMesh.New(fname)
+        f1ts=MEDFileIntField1TS(fname,fieldName,23,24)
+        self.assertTrue(f2.isEqual(f1ts.field(mm),1e-12,0))
+        fmts=MEDFileIntFieldMultiTS(fname,fieldName)
+        self.assertTrue(f2.isEqual(fmts.field(23,24,mm),1e-12,0))
+        ## Node on elements
+        f3=MEDCouplingFieldInt(ON_GAUSS_NE) ; f3.setMesh(m) ; arr3=DataArrayInt([0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19]) ; f3.setArray(arr3) ; f3.setTime(0.5,2,3)
+        f3.setName(fieldName) ; f3.checkConsistencyLight()
+        mm.write(fname,2) ; ff=MEDFileIntField1TS() ; ff.setFieldNoProfileSBT(f3) ; ff.write(fname,0)
+        #
+        mm=MEDFileMesh.New(fname)
+        f1ts=MEDFileIntField1TS(fname,fieldName,2,3)
+        self.assertTrue(f3.isEqual(f1ts.field(mm),1e-12,0))
+        ## Gauss
+        f4=MEDCouplingFieldInt(ON_GAUSS_PT) ; f4.setMesh(m) ; f4.setName(fieldName)
+        f4.setGaussLocalizationOnType(NORM_TRI3,[0.,0.,1.,0.,1.,1.],[0.1,0.1, 0.2,0.2, 0.3,0.3, 0.4,0.4, 0.5,0.5],[0.2,0.3,0.1,0.05,0.35])
+        f4.setGaussLocalizationOnType(NORM_QUAD4,[0.,0.,1.,0.,1.,1.,0.,1.],[0.3,0.4, 0.6,0.7],[0.7,0.3]) ; f4.setTime(0.25,4,5)
+        arr4=DataArrayInt([0,1,2,3,4 ,10,11,12,13,14, 20,21,22,23,24, 30,31,32,33,34, 45,46, 55,56]) ; arr4.setInfoOnComponent(0,"abc") ; f4.setArray(arr4)
+        f4.checkConsistencyLight()
+        mm.write(fname,2) ; ff=MEDFileIntField1TS() ; ff.setFieldNoProfileSBT(f4) ; ff.write(fname,0)
+        #
+        mm=MEDFileMesh.New(fname)
+        f1ts=MEDFileIntField1TS(fname,fieldName,4,5)
+        self.assertTrue(f4.isEqual(f1ts.field(mm),1e-12,0))
+        pass
+
+    def testMEDFileFieldEasyField3(self):
+        """Here a multi level mesh. And field on cells lying on different level of this mesh. Show how "field" method deal with that. Here on field double are considered."""
+        fname="Pyfile103.med"
+        fieldName="field1"
+        mm=MEDFileUMesh()
+        coo=DataArrayDouble([(3,2,1),(8,7,6),(5,9,10)])
+        m=MEDCouplingUMesh("mesh",2) ; m.setCoords(coo)
+        m.allocateCells()
+        m.insertNextCell(NORM_TRI3,[0,1,2])
+        m.insertNextCell(NORM_TRI3,[3,4,5])
+        m.insertNextCell(NORM_TRI3,[6,7,8])
+        m.insertNextCell(NORM_TRI3,[9,10,11])
+        m.insertNextCell(NORM_QUAD4,[100,101,102,103])
+        m.insertNextCell(NORM_QUAD4,[104,105,106,107])
+        mm[-1]=m
+        m0=MEDCouplingUMesh("mesh",3) ; m0.setCoords(coo)
+        m0.allocateCells()
+        m0.insertNextCell(NORM_TETRA4,[3,2,5,0])
+        m0.insertNextCell(NORM_TETRA4,[7,6,3,2])
+        mm[0]=m0
+        mm.write(fname,2)
+        # start slowly
+        f1=MEDCouplingFieldDouble(ON_CELLS) ; f1.setName(fieldName) ; f1.setArray(DataArrayDouble([(0,100),(1,101)])) ; f1.setMesh(mm[0]) ; f1.setTime(4.,1,2)
+        f1ts=MEDFileField1TS() ; f1ts.setFieldNoProfileSBT(f1) ; f1ts.write(fname,0)
+        #
+        mm=MEDFileMesh.New(fname) ; f1ts=MEDFileField1TS(fname,fieldName,1,2)
+        self.assertTrue(f1.isEqual(f1ts.field(mm),1e-12,1e-12))
+        # here f1 lying on level -1 not 0 check if "field" method detect it !
+        f1=MEDCouplingFieldDouble(ON_CELLS) ; f1.setName(fieldName) ; f1.setArray(DataArrayDouble([(0,100),(1,101),(0,100),(1,101),(0,100),(1,101)]))
+        f1.setMesh(mm[-1]) # -1 is very important
+        f1.setTime(16.,3,4)
+        f1.checkConsistencyLight()
+        mm.write(fname,2)
+        f1ts=MEDFileField1TS() ; f1ts.setFieldNoProfileSBT(f1) ; f1ts.write(fname,0)
+        #
+        mm=MEDFileMesh.New(fname) ; f1ts=MEDFileField1TS(fname,fieldName,3,4)
+        self.assertTrue(f1.isEqual(f1ts.field(mm),1e-12,1e-12))
+        # nodes on elements
+        f3=MEDCouplingFieldDouble(ON_GAUSS_NE)
+        f3.setMesh(mm[-1]) # this line is important
+        arr3=DataArrayDouble([0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19]) ; f3.setArray(arr3) ; f3.setTime(0.5,2,3)
+        f3.setName(fieldName) ; f3.checkConsistencyLight()
+        mm.write(fname,2) ; ff=MEDFileField1TS() ; ff.setFieldNoProfileSBT(f3) ; ff.write(fname,0)
+        #
+        mm=MEDFileMesh.New(fname) ; f1ts=MEDFileField1TS(fname,fieldName,2,3)
+        self.assertTrue(f3.isEqual(f1ts.field(mm),1e-12,1e-12))
+        # gauss
+        f4=MEDCouplingFieldDouble(ON_GAUSS_PT)
+        f4.setMesh(mm[-1]) # this line is important
+        f4.setName(fieldName)
+        f4.setGaussLocalizationOnType(NORM_TRI3,[0.,0.,1.,0.,1.,1.],[0.1,0.1, 0.2,0.2, 0.3,0.3, 0.4,0.4, 0.5,0.5],[0.2,0.3,0.1,0.05,0.35])
+        f4.setGaussLocalizationOnType(NORM_QUAD4,[0.,0.,1.,0.,1.,1.,0.,1.],[0.3,0.4, 0.6,0.7],[0.7,0.3]) ; f4.setTime(0.25,4,5)
+        arr4=DataArrayDouble([0,1,2,3,4 ,10,11,12,13,14, 20,21,22,23,24, 30,31,32,33,34, 45,46, 55,56]) ; arr4.setInfoOnComponent(0,"abc") ; f4.setArray(arr4)
+        f4.checkConsistencyLight()
+        mm.write(fname,2) ; ff=MEDFileField1TS() ; ff.setFieldNoProfileSBT(f4) ; ff.write(fname,0)
+        mm=MEDFileMesh.New(fname) ; f1ts=MEDFileField1TS(fname,fieldName,4,5)
+        self.assertTrue(f4.isEqual(f1ts.field(mm),1e-12,1e-12))
+        pass
+
+    def testMEDFileFieldEasyField4(self):
+        """ Same than testMEDFileFieldEasyField3 but with integers"""
+        fname="Pyfile104.med"
+        fieldName="field1"
+        mm=MEDFileUMesh()
+        coo=DataArrayDouble([(3,2,1),(8,7,6),(5,9,10)])
+        m=MEDCouplingUMesh("mesh",2) ; m.setCoords(coo)
+        m.allocateCells()
+        m.insertNextCell(NORM_TRI3,[0,1,2])
+        m.insertNextCell(NORM_TRI3,[3,4,5])
+        m.insertNextCell(NORM_TRI3,[6,7,8])
+        m.insertNextCell(NORM_TRI3,[9,10,11])
+        m.insertNextCell(NORM_QUAD4,[100,101,102,103])
+        m.insertNextCell(NORM_QUAD4,[104,105,106,107])
+        mm[-1]=m
+        m0=MEDCouplingUMesh("mesh",3) ; m0.setCoords(coo)
+        m0.allocateCells()
+        m0.insertNextCell(NORM_TETRA4,[3,2,5,0])
+        m0.insertNextCell(NORM_TETRA4,[7,6,3,2])
+        mm[0]=m0
+        mm.write(fname,2)
+        # start slowly
+        f1=MEDCouplingFieldInt(ON_CELLS) ; f1.setName(fieldName) ; f1.setArray(DataArrayInt([(0,100),(1,101)])) ; f1.setMesh(mm[0]) ; f1.setTime(4.,1,2)
+        f1ts=MEDFileIntField1TS() ; f1ts.setFieldNoProfileSBT(f1) ; f1ts.write(fname,0)
+        #
+        mm=MEDFileMesh.New(fname) ; f1ts=MEDFileIntField1TS(fname,fieldName,1,2)
+        self.assertTrue(f1.isEqual(f1ts.field(mm),1e-12,0))
+        # here f1 lying on level -1 not 0 check if "field" method detect it !
+        f1=MEDCouplingFieldInt(ON_CELLS) ; f1.setName(fieldName) ; f1.setArray(DataArrayInt([(0,100),(1,101),(0,100),(1,101),(0,100),(1,101)]))
+        f1.setMesh(mm[-1]) # -1 is very important
+        f1.setTime(16.,3,4)
+        f1.checkConsistencyLight()
+        mm.write(fname,2)
+        f1ts=MEDFileIntField1TS() ; f1ts.setFieldNoProfileSBT(f1) ; f1ts.write(fname,0)
+        #
+        mm=MEDFileMesh.New(fname) ; f1ts=MEDFileIntField1TS(fname,fieldName,3,4)
+        self.assertTrue(f1.isEqual(f1ts.field(mm),1e-12,0))
+        # nodes on elements
+        f3=MEDCouplingFieldInt(ON_GAUSS_NE)
+        f3.setMesh(mm[-1]) # this line is important
+        arr3=DataArrayInt([0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19]) ; f3.setArray(arr3) ; f3.setTime(0.5,2,3)
+        f3.setName(fieldName) ; f3.checkConsistencyLight()
+        mm.write(fname,2) ; ff=MEDFileIntField1TS() ; ff.setFieldNoProfileSBT(f3) ; ff.write(fname,0)
+        #
+        mm=MEDFileMesh.New(fname) ; f1ts=MEDFileIntField1TS(fname,fieldName,2,3)
+        self.assertTrue(f3.isEqual(f1ts.field(mm),1e-12,0))
+        # gauss
+        f4=MEDCouplingFieldInt(ON_GAUSS_PT)
+        f4.setMesh(mm[-1]) # this line is important
+        f4.setName(fieldName)
+        f4.setGaussLocalizationOnType(NORM_TRI3,[0.,0.,1.,0.,1.,1.],[0.1,0.1, 0.2,0.2, 0.3,0.3, 0.4,0.4, 0.5,0.5],[0.2,0.3,0.1,0.05,0.35])
+        f4.setGaussLocalizationOnType(NORM_QUAD4,[0.,0.,1.,0.,1.,1.,0.,1.],[0.3,0.4, 0.6,0.7],[0.7,0.3]) ; f4.setTime(0.25,4,5)
+        arr4=DataArrayInt([0,1,2,3,4 ,10,11,12,13,14, 20,21,22,23,24, 30,31,32,33,34, 45,46, 55,56]) ; arr4.setInfoOnComponent(0,"abc") ; f4.setArray(arr4)
+        f4.checkConsistencyLight()
+        mm.write(fname,2) ; ff=MEDFileIntField1TS() ; ff.setFieldNoProfileSBT(f4) ; ff.write(fname,0)
+        mm=MEDFileMesh.New(fname) ; f1ts=MEDFileIntField1TS(fname,fieldName,4,5)
+        self.assertTrue(f4.isEqual(f1ts.field(mm),1e-12,0))
+        pass
+
+    def testMEDFileFieldEasyField5(self):
+        """More and more difficult now look at how profiles are managed by "field" method."""
+        fname="Pyfile105.med"
+        fieldName="field1"
+        mm=MEDFileUMesh()
+        coo=DataArrayDouble([(3,2,1),(8,7,6),(5,9,10)])
+        m=MEDCouplingUMesh("mesh",2) ; m.setCoords(coo)
+        m.allocateCells()
+        m.insertNextCell(NORM_TRI3,[0,1,2])
+        m.insertNextCell(NORM_TRI3,[3,4,5])
+        m.insertNextCell(NORM_TRI3,[6,7,8])
+        m.insertNextCell(NORM_TRI3,[9,10,11])
+        m.insertNextCell(NORM_QUAD4,[100,101,102,103])
+        m.insertNextCell(NORM_QUAD4,[104,105,106,107])
+        mm[0]=m
+        mm.write(fname,2)
+        pfl=DataArrayInt([0,2,3,5]) ; pfl.setName("pfl")
+        m2=m.deepCopy()[pfl] ; m2.setName(m.getName())
+        #
+        arr0=DataArrayDouble([10,11,12,13])
+        f=MEDCouplingFieldDouble(ON_CELLS) ; f.setArray(arr0) ; f.setMesh(m2)
+        f.setName(fieldName) ; f.setTime(2.,6,7) ; f.checkConsistencyLight()
+        ff=MEDFileFieldMultiTS() ; ff.appendFieldProfile(f,mm,0,pfl) # ff is a field on profile
+        ff.write(fname,0)
+        #
+        mm=MEDFileMesh.New(fname) ; f1ts=MEDFileField1TS(fname,fieldName,6,7)
+        self.assertTrue(f.isEqual(f1ts.field(mm),1e-12,1e-12))
+        # more complicated -> multi level
+        m0=MEDCouplingUMesh("mesh",3) ; m0.setCoords(coo)
+        m0.allocateCells()
+        m0.insertNextCell(NORM_TETRA4,[3,2,5,0])
+        m0.insertNextCell(NORM_TETRA4,[7,6,3,2])
+        mm2=MEDFileUMesh()
+        mm2[0]=m0 ; mm2[-1]=m
+        #
+        ff=MEDFileField1TS() ; ff.setFieldProfile(f,mm2,-1,pfl)
+        #
+        mm=MEDFileMesh.New(fname) ; f1ts=MEDFileField1TS(fname,fieldName,6,7)
+        self.assertTrue(f.isEqual(f1ts.field(mm),1e-12,1e-12))
+        pass
+
+    def testExtractPart1(self):
+        coo=DataArrayDouble([(0,0),(1,0),(2,0),(3,0),(4,0),(0,1),(1,1),(2,1),(3,1),(4,1),(0,2),(1,2),(2,2),(3,2),(4,2)])
+        meshName="mesh"
+        m0=MEDCouplingUMesh(meshName,2) ; m0.setCoords(coo) ; m0.allocateCells()
+        m0.insertNextCell(NORM_TRI3,[8,4,3])
+        m0.insertNextCell(NORM_TRI3,[8,9,4])
+        m0.insertNextCell(NORM_TRI3,[7,13,8])
+        m0.insertNextCell(NORM_TRI3,[7,12,13])
+        m0.insertNextCell(NORM_TRI3,[0,6,1])
+        m0.insertNextCell(NORM_TRI3,[0,5,6])
+        m0.insertNextCell(NORM_QUAD4,[1,6,7,2])
+        m0.insertNextCell(NORM_QUAD4,[2,7,8,3])
+        m0.insertNextCell(NORM_QUAD4,[8,13,14,9])
+        m0.insertNextCell(NORM_QUAD4,[6,11,12,7])
+        m0.insertNextCell(NORM_QUAD4,[5,10,11,6])
+        #
+        m1=MEDCouplingUMesh(meshName,1) ; m1.setCoords(coo) ; m1.allocateCells()
+        m1.insertNextCell(NORM_SEG2,[10,5])
+        m1.insertNextCell(NORM_SEG2,[5,0])
+        m1.insertNextCell(NORM_SEG2,[0,1])
+        m1.insertNextCell(NORM_SEG2,[1,2])
+        m1.insertNextCell(NORM_SEG2,[2,3])
+        m1.insertNextCell(NORM_SEG2,[3,4])
+        m1.insertNextCell(NORM_SEG2,[4,9])
+        m1.insertNextCell(NORM_SEG2,[9,14])
+        m1.insertNextCell(NORM_SEG2,[14,13])
+        m1.insertNextCell(NORM_SEG2,[13,12])
+        m1.insertNextCell(NORM_SEG2,[12,11])
+        m1.insertNextCell(NORM_SEG2,[11,10])
+        mm=MEDFileUMesh()
+        mm[0]=m0 ; mm[-1]=m1
+        arr0=DataArrayInt([0,1,2,3,4,6,7,8,12,13])
+        tab={} #
+        tab[0]=DataArrayInt([0,2,3,4,6,7])
+        tab[-1]=DataArrayInt([2,3,4,5,9])
+        fs=MEDFileFields()
+        self.assertTrue(mm.deduceNodeSubPartFromCellSubPart(tab).isEqual(arr0))
+        tab[1]=arr0
+        #
+        fname0="Field0"
+        fmts=MEDFileFieldMultiTS() ; fs.pushField(fmts)
+        t0=(16.5,3,4)
+        ic=["toto [m]"]
+        arr0_0=DataArrayDouble([100,101,102,103,104,105,106,107,108,109,110]) ; arr0_0.setInfoOnComponents(ic)
+        f0=MEDCouplingFieldDouble(ON_CELLS) ; f0.setTime(*t0) ; f0.setArray(arr0_0)
+        f0.setMesh(m0) ; f0.setName(fname0)
+        f1=MEDCouplingFieldDouble(ON_CELLS) ; f1.setTime(*t0) ; f1.setArray(DataArrayDouble([200,201,202,203,204,205,206,207,208,209,210,211]))
+        f1.setMesh(m1) ; f1.setName(fname0) ; f1.getArray().setInfoOnComponents(ic)
+        f2=MEDCouplingFieldDouble(ON_NODES) ; f2.setTime(*t0) ; f2.setArray(DataArrayDouble([300,301,302,303,304,305,306,307,308,309,310,311,312,313,314]))
+        f2.setMesh(m0) ; f2.setName(fname0) ; f2.getArray().setInfoOnComponents(ic)
+        f1ts=MEDFileField1TS() ; f1ts.setFieldNoProfileSBT(f0) ; f1ts.setFieldNoProfileSBT(f1) ; f1ts.setFieldNoProfileSBT(f2)
+        fmts.pushBackTimeStep(f1ts)
+        #
+        mmOut=mm.extractPart(tab)
+        #
+        fsPart0=fs.extractPart(tab,mm)
+        self.assertEqual(len(fsPart0),1)
+        fmtsP=fsPart0[0]
+        self.assertEqual(len(fmtsP),1)
+        f1ts=fmtsP[0]
+        self.assertRaises(InterpKernelException,f1ts.field,mmOut)
+        #
+        self.assertTrue(mmOut[0].computeCellCenterOfMass().isEqual(m0[tab[0]].computeCellCenterOfMass(),1e-12))
+        self.assertTrue(mmOut[-1].computeCellCenterOfMass().isEqual(m1[tab[-1]].computeCellCenterOfMass(),1e-12))
+        #
+        m0Part=m0.deepCopy()[tab[0]] ; m0Part.renumberNodes(tab[1].invertArrayN2O2O2N(mm.getNumberOfNodes()),len(tab[1])) ; m0Part.setName(m0.getName())
+        self.assertTrue(mmOut[0].isEqual(m0Part,1e-12))
+        m1Part=m1.deepCopy()[tab[-1]] ; m1Part.renumberNodes(tab[1].invertArrayN2O2O2N(mm.getNumberOfNodes()),len(tab[1])) ; m1Part.setName(m0.getName())
+        self.assertTrue(mmOut[0].isEqual(m0Part,1e-12))
+        self.assertTrue(mmOut[-1].isEqual(m1Part,1e-12))
+        #
+        f0Part=f1ts.getFieldOnMeshAtLevel(ON_CELLS,0,mmOut) ; f0Part.checkConsistencyLight()
+        self.assertEqual(f0Part.getTypeOfField(),ON_CELLS)
+        self.assertTrue(f0Part.getMesh().isEqual(m0Part,1e-12))
+        arr0Exp=DataArrayDouble([100,102,103,104,106,107]) ; arr0Exp.setInfoOnComponents(ic)
+        self.assertTrue(f0Part.getArray().isEqual(arr0Exp,1e-12)) ; self.assertEqual(f0Part.getTime(),list(t0))
+        f1Part=f1ts.getFieldOnMeshAtLevel(ON_CELLS,-1,mmOut) ; f1Part.checkConsistencyLight()
+        self.assertEqual(f1Part.getTypeOfField(),ON_CELLS)
+        self.assertTrue(f1Part.getMesh().isEqual(m1Part,1e-12))
+        arr1Exp=DataArrayDouble([202,203,204,205,209]) ; arr1Exp.setInfoOnComponents(ic)
+        self.assertTrue(f1Part.getArray().isEqual(arr1Exp,1e-12)) ; self.assertEqual(f1Part.getTime(),list(t0))
+        #
+        f2Part=f1ts.getFieldOnMeshAtLevel(ON_NODES,0,mmOut) ; f2Part.checkConsistencyLight()
+        arr2Exp=DataArrayDouble([300,301,302,303,304,306,307,308,312,313]) ; arr2Exp.setInfoOnComponents(ic)
+        self.assertTrue(f2Part.getArray().isEqual(arr2Exp,1e-12)) ; self.assertEqual(f2Part.getTime(),list(t0))
+        # multisteps
+        fs=MEDFileFields() ; fmts=MEDFileFieldMultiTS() ; fs.pushField(fmts)
+        tss=[(16.5,3,4),(17.5,4,5),(18.5,5,6)]
+        for i,tt in enumerate(tss):
+            f0=MEDCouplingFieldDouble(ON_CELLS) ; f0.setTime(*tt)
+            myarr=arr0_0+i*1000.
+            f0.setArray(myarr)
+            f0.setMesh(m0) ; f0.setName(fname0) ; f0.getArray().setInfoOnComponents(ic)
+            f1ts=MEDFileField1TS() ; f1ts.setFieldNoProfileSBT(f0) ; fmts.pushBackTimeStep(f1ts)
+            pass
+        fsPart1=fs.extractPart(tab,mm)
+        self.assertEqual(len(fsPart1),1)
+        fmtsP=fsPart1[0]
+        self.assertEqual(len(fmtsP),len(tss))
+        for i,(f1tsP,tt) in enumerate(zip(fmtsP,tss)):
+            fPart=f1tsP.field(mmOut) ; fPart.checkConsistencyLight()
+            self.assertEqual(fPart.getTypeOfField(),ON_CELLS)
+            arr0Exp=DataArrayDouble([100,102,103,104,106,107]) ; arr0Exp.setInfoOnComponents(ic) ; arr0Exp+=i*1000.
+            self.assertTrue(fPart.getMesh().isEqual(m0Part,1e-12))
+            self.assertTrue(fPart.getArray().isEqual(arr0Exp,1e-12))
+            self.assertEqual(fPart.getTime(),list(tt))
+            pass
+        pass
+
+    def testSymmetryPlusAggregationMFD1(self):
+        """ Testing of MEDFileData::Aggregate and MEDFileUMesh::Aggregate and MEDFileUMesh::getAllDistributionOfType """
+        fname1="Pyfile106_1.med"
+        fname2="Pyfile106_2.med"
+        fname3="Pyfile106_3.med"
+        meshName="mesh"
+        mm1=MEDFileUMesh()
+        da1=DataArrayDouble([1,2,10,3,4,11,5,6,12,7,8,13],4,3) ; da1.setInfoOnComponents(["aa [m]","bbb [kg]","cccc [MW]"])
+        mm1.setCoords(da1)
+        mm1_0=MEDCouplingUMesh(meshName,3) ; mm1_0.allocateCells()
+        mm1_0.setCoords(da1)
+        mm1_0.insertNextCell(NORM_TETRA4,[0,1,2,3])
+        mm1_0.insertNextCell(NORM_TETRA4,[4,5,6,7])
+        mm1_0.insertNextCell(NORM_PENTA6,[8,9,10,11,12,13])
+        mm1_0.insertNextCell(NORM_PENTA6,[14,15,16,17,18,19])
+        mm1_0.insertNextCell(NORM_PENTA6,[20,21,22,23,24,25])
+        mm1[0]=mm1_0
+        mm1.setFamilyFieldArr(0,DataArrayInt([1,2,3,4,5]))
+        mm1.setRenumFieldArr(0,DataArrayInt([11,12,13,14,15]))
+        #
+        mm1_1=MEDCouplingUMesh(meshName,2) ; mm1_1.allocateCells()
+        mm1_1.setCoords(da1)
+        mm1_1.insertNextCell(NORM_TRI3,[0,1,2])
+        mm1_1.insertNextCell(NORM_TRI3,[3,4,5])
+        mm1_1.insertNextCell(NORM_QUAD4,[6,7,8,9])
+        mm1_1.insertNextCell(NORM_QUAD4,[10,11,12,13])
+        mm1_1.insertNextCell(NORM_QUAD4,[14,15,16,17])
+        mm1_1.insertNextCell(NORM_QUAD4,[18,19,20,21])
+        mm1[-1]=mm1_1
+        mm1.setFamilyFieldArr(-1,DataArrayInt([6,7,8,9,10,11]))
+        mm1.setRenumFieldArr(-1,DataArrayInt([16,17,18,19,20,21]))
+        for i in range(1,10):
+            mm1.setFamilyId("F%d"%i,i)
+        mm1.setFamilyId("FAMILLE_ZERO",0)
+        mm1.setFamilyId("H1",100)
+        mm1.setFamiliesOnGroup("myGRP",["F2","F6"])
+        mm1.setFamiliesOnGroup("myGRP1",["F2","F6"])
+        mm1.setFamilyFieldArr(1,DataArrayInt([12,13,14,15]))
+        mm1.setRenumFieldArr(1,DataArrayInt([22,23,24,25]))
+        ##############
+        mm2=MEDFileUMesh()
+        da1=DataArrayDouble([9,10,30,11,12,31,13,14,32,15,16,33,17,18,34],5,3) ; da1.setInfoOnComponents(["aa [m]","bbb [kg]","cccc [MW]"])
+        mm2.setCoords(da1)
+        mm2_0=MEDCouplingUMesh(meshName,3) ; mm2_0.allocateCells()
+        mm2_0.setCoords(da1)
+        mm2_0.insertNextCell(NORM_TETRA4,[100,101,102,103])
+        mm2_0.insertNextCell(NORM_TETRA4,[104,105,106,107])
+        mm2_0.insertNextCell(NORM_TETRA4,[108,109,110,111])
+        mm2_0.insertNextCell(NORM_PENTA6,[112,113,114,115,116,117])
+        mm2[0]=mm2_0
+        mm2.setFamilyFieldArr(0,DataArrayInt([40,41,42,43]))
+        mm2.setRenumFieldArr(0,DataArrayInt([50,51,52,53]))
+        #
+        mm2_1=MEDCouplingUMesh(meshName,2) ; mm2_1.allocateCells()
+        mm2_1.setCoords(da1)
+        mm2_1.insertNextCell(NORM_TRI3,[100,101,102])
+        mm2_1.insertNextCell(NORM_TRI3,[103,104,105])
+        mm2_1.insertNextCell(NORM_TRI3,[106,107,108])
+        mm2_1.insertNextCell(NORM_QUAD4,[109,110,111,112])
+        mm2_1.insertNextCell(NORM_QUAD4,[113,114,115,116])
+        mm2_1.insertNextCell(NORM_QUAD4,[117,118,119,120])
+        mm2_1.insertNextCell(NORM_QUAD4,[121,122,123,124])
+        mm2_1.insertNextCell(NORM_QUAD4,[125,126,127,128])
+        mm2[-1]=mm2_1
+        mm2.setFamilyFieldArr(-1,DataArrayInt([200,201,202,203,204,205,206,207]))
+        mm2.setRenumFieldArr(-1,DataArrayInt([300,301,302,303,304,305,306,307]))
+        for i in range(1,12):
+            mm2.setFamilyId("G%d"%i,i+30)
+        mm2.setFamilyId("H1",100)
+        mm2.setFamilyId("FAMILLE_ZERO",0)
+        mm2.setFamiliesOnGroup("myGRP",["G2","G6"])
+        mm2.setFamiliesOnGroup("myGRP2",["G4","G7"])
+        mm2.setFamilyFieldArr(1,DataArrayInt([112,113,114,115,116]))
+        mm2.setRenumFieldArr(1,DataArrayInt([122,123,124,125,126]))
+        #
+        mm=MEDFileUMesh.Aggregate([mm1,mm2])
+        #######
+        def CheckMesh(tester,mm):
+            cooExp=DataArrayDouble([(1,2,10),(3,4,11),(5,6,12),(7,8,13),(9,10,30),(11,12,31),(13,14,32),(15,16,33),(17,18,34)]) ; cooExp.setInfoOnComponents(["aa [m]","bbb [kg]","cccc [MW]"])
+            tester.assertTrue(mm.getCoords().isEqual(cooExp,1e-12))
+            tester.assertTrue(mm[0].getNodalConnectivity().isEqual(DataArrayInt([14,0,1,2,3,14,4,5,6,7,14,104,105,106,107,14,108,109,110,111,14,112,113,114,115,16,8,9,10,11,12,13,16,14,15,16,17,18,19,16,20,21,22,23,24,25,16,116,117,118,119,120,121])))
+            tester.assertTrue(mm[0].getNodalConnectivityIndex().isEqual(DataArrayInt([0,5,10,15,20,25,32,39,46,53])))
+            tester.assertTrue(mm[-1].getNodalConnectivity().isEqual(DataArrayInt([3,0,1,2,3,3,4,5,3,104,105,106,3,107,108,109,3,110,111,112,4,6,7,8,9,4,10,11,12,13,4,14,15,16,17,4,18,19,20,21,4,113,114,115,116,4,117,118,119,120,4,121,122,123,124,4,125,126,127,128,4,129,130,131,132])))
+            tester.assertTrue(mm[-1].getNodalConnectivityIndex().isEqual(DataArrayInt([0,4,8,12,16,20,25,30,35,40,45,50,55,60,65])))
+            tester.assertTrue(mm.getFamilyFieldAtLevel(0).isEqual(DataArrayInt([1,2,40,41,42,3,4,5,43])))
+            tester.assertTrue(mm.getNumberFieldAtLevel(0).isEqual(DataArrayInt([11,12,50,51,52,13,14,15,53])))
+            tester.assertTrue(mm.getFamilyFieldAtLevel(-1).isEqual(DataArrayInt([6,7,200,201,202,8,9,10,11,203,204,205,206,207])))
+            tester.assertTrue(mm.getNumberFieldAtLevel(-1).isEqual(DataArrayInt([16,17,300,301,302,18,19,20,21,303,304,305,306,307])))
+            refFamIds=[("FAMILLE_ZERO",0),('F1',1),('F2',2),('F3',3),('F4',4),('F5',5),('F6',6),('F7',7),('F8',8),('F9',9),('G1',31),('G10',40),('G11',41),('G2',32),('G3',33),('G4',34),('G5',35),('G6',36),('G7',37),('G8',38),('G9',39),("H1",100)]
+            tester.assertEqual(set(mm.getFamiliesNames()),set([elt[0] for elt in refFamIds]))
+            tester.assertEqual(set([mm.getFamilyId(elt) for elt in mm.getFamiliesNames()]),set([elt[1] for elt in refFamIds]))
+            tester.assertEqual(mm.getGroupsNames(),('myGRP','myGRP1','myGRP2'))
+            tester.assertEqual(mm.getAllDistributionOfTypes(),[(NORM_TRI3,5),(NORM_QUAD4,9),(NORM_TETRA4,5),(NORM_PENTA6,4),(NORM_ERROR,9)])
+            pass
+        CheckMesh(self,mm)
+        ##
+        fieldName="zeField"
+        t1=(2.3,3,5)
+        t2=(5.6,7,12)
+        infoc=["dd [W]","eee [kA]"]
+        ##
+        fmts1=MEDFileFieldMultiTS()
+        f1ts1=MEDFileField1TS()
+        f1_1=MEDCouplingFieldDouble(ON_CELLS) ; f1_1.setMesh(mm1[0]) ; f1_1.setName(fieldName)
+        arr1=DataArrayDouble([(10,110),(11,111),(12,112),(13,113),(14,114)])
+        arr1.setInfoOnComponents(infoc)
+        f1_1.setArray(arr1) ; f1_1.setTime(*t1) ; f1_1.setTimeUnit("ms")
+        f1_1.checkConsistencyLight()
+        f1ts1.setFieldNoProfileSBT(f1_1)
+        #
+        f1_2=MEDCouplingFieldDouble(ON_CELLS) ; f1_2.setMesh(mm1[-1]) ; f1_2.setName(fieldName)
+        arr2=DataArrayDouble([(15,115),(16,116),(17,117),(18,118),(19,119),(20,120)])
+        arr2.setInfoOnComponents(infoc)
+        f1_2.setArray(arr2) ; f1_2.setTime(*t1) ; f1_2.setTimeUnit("ms")
+        f1_2.checkConsistencyLight()
+        f1ts1.setFieldNoProfileSBT(f1_2)
+        f1_3=MEDCouplingFieldDouble(ON_NODES) ; f1_3.setMesh(mm1[0]) ; f1_3.setName(fieldName)
+        arr3=DataArrayDouble([(21,121),(22,122),(23,123),(24,124)])
+        arr3.setInfoOnComponents(infoc)
+        f1_3.setArray(arr3) ; f1_3.setTime(*t1) ; f1_3.setTimeUnit("ms")
+        f1_3.checkConsistencyLight()
+        f1ts1.setFieldNoProfileSBT(f1_3)
+        fmts1.pushBackTimeStep(f1ts1)
+        #
+        f1ts2=f1ts1.deepCopy()
+        f1ts2.setTime(t2[1],t2[2],t2[0])
+        f1ts2.getUndergroundDataArray()[:]+=2000
+        fmts1.pushBackTimeStep(f1ts2)
+        ### fmts2
+        fmts2=MEDFileFieldMultiTS()
+        f1ts3=MEDFileField1TS()
+        f2_1=MEDCouplingFieldDouble(ON_CELLS) ; f2_1.setMesh(mm2[0]) ; f2_1.setName(fieldName)
+        arr4=DataArrayDouble([(50,150),(51,151),(52,152),(53,153)])
+        arr4.setInfoOnComponents(infoc)
+        f2_1.setArray(arr4) ; f2_1.setTime(*t1) ; f2_1.setTimeUnit("ms")
+        f2_1.checkConsistencyLight()
+        f1ts3.setFieldNoProfileSBT(f2_1)
+        f2_2=MEDCouplingFieldDouble(ON_CELLS) ; f2_2.setMesh(mm2[-1]) ; f2_2.setName(fieldName)
+        arr5=DataArrayDouble([(54,154),(55,155),(56,156),(57,157),(158,158),(59,159),(60,160),(61,161)])
+        arr5.setInfoOnComponents(infoc)
+        f2_2.setArray(arr5) ; f2_2.setTime(*t1) ; f2_2.setTimeUnit("ms")
+        f2_2.checkConsistencyLight()
+        f1ts3.setFieldNoProfileSBT(f2_2)
+        f2_3=MEDCouplingFieldDouble(ON_NODES) ; f2_3.setMesh(mm2[0]) ; f2_3.setName(fieldName)
+        arr6=DataArrayDouble([(62,162),(63,163),(64,164),(65,165),(66,166)])
+        arr6.setInfoOnComponents(infoc)
+        f2_3.setArray(arr6) ; f2_3.setTime(*t1) ; f2_3.setTimeUnit("ms")
+        f2_3.checkConsistencyLight()
+        f1ts3.setFieldNoProfileSBT(f2_3)
+        fmts2.pushBackTimeStep(f1ts3)
+        #
+        f1ts4=f1ts3.deepCopy()
+        f1ts4.setTime(t2[1],t2[2],t2[0])
+        f1ts4.getUndergroundDataArray()[:]+=2000
+        fmts2.pushBackTimeStep(f1ts4)
+        #
+        mfd1=MEDFileData()
+        mfd1.setMeshes(MEDFileMeshes())
+        mfd1.getMeshes().pushMesh(mm1)
+        mfd1.setFields(MEDFileFields())
+        mfd1.getFields().pushField(fmts1)
+        #
+        mfd2=MEDFileData()
+        mfd2.setMeshes(MEDFileMeshes())
+        mfd2.getMeshes().pushMesh(mm2)
+        mfd2.setFields(MEDFileFields())
+        mfd2.getFields().pushField(fmts2)
+        # ze Call !
+        mfd=MEDFileData.Aggregate([mfd1,mfd2])
+        def CheckMFD(tester,mfd):
+            tester.assertEqual(len(mfd.getMeshes()),1)
+            tester.assertEqual(len(mfd.getFields()),1)
+            CheckMesh(self,mfd.getMeshes()[0])
+            tester.assertEqual(len(mfd.getFields()[0]),2)
+            zeF1=mfd.getFields()[0][0]
+            zeF1_1=zeF1.getFieldOnMeshAtLevel(ON_CELLS,0,mfd.getMeshes()[0])
+            ref=MEDCouplingFieldDouble.MergeFields([f1_1,f2_1])
+            o2n=ref.getMesh().deepCopy().sortCellsInMEDFileFrmt()
+            ref.renumberCells(o2n)
+            tester.assertTrue(ref.isEqual(zeF1_1,1e-12,1e-12))
+            zeF1_2=zeF1.getFieldOnMeshAtLevel(ON_CELLS,-1,mfd.getMeshes()[0])
+            ref=MEDCouplingFieldDouble.MergeFields([f1_2,f2_2])
+            o2n=ref.getMesh().deepCopy().sortCellsInMEDFileFrmt()
+            ref.renumberCells(o2n)
+            tester.assertTrue(ref.isEqual(zeF1_2,1e-12,1e-12))
+            zeF1_3=zeF1.getFieldOnMeshAtLevel(ON_NODES,0,mfd.getMeshes()[0])
+            ref=MEDCouplingFieldDouble.MergeFields([f1_3,f2_3])
+            o2n=ref.getMesh().deepCopy().sortCellsInMEDFileFrmt()
+            ref.renumberCells(o2n)
+            tester.assertTrue(ref.isEqual(zeF1_3,1e-12,1e-12))
+            #
+            zeF2=mfd.getFields()[0][1]
+            zeF2_1=zeF2.getFieldOnMeshAtLevel(ON_CELLS,0,mfd.getMeshes()[0])
+            ref=MEDCouplingFieldDouble.MergeFields([f1_1,f2_1])
+            o2n=ref.getMesh().deepCopy().sortCellsInMEDFileFrmt()
+            ref.renumberCells(o2n)
+            ref.setTime(*t2) ; ref.getArray()[:]+=2000
+            tester.assertTrue(ref.isEqual(zeF2_1,1e-12,1e-12))
+            zeF2_2=zeF2.getFieldOnMeshAtLevel(ON_CELLS,-1,mfd.getMeshes()[0])
+            ref=MEDCouplingFieldDouble.MergeFields([f1_2,f2_2])
+            o2n=ref.getMesh().deepCopy().sortCellsInMEDFileFrmt()
+            ref.renumberCells(o2n)
+            ref.setTime(*t2) ; ref.getArray()[:]+=2000
+            tester.assertTrue(ref.isEqual(zeF2_2,1e-12,1e-12))
+            zeF2_3=zeF2.getFieldOnMeshAtLevel(ON_NODES,0,mfd.getMeshes()[0])
+            ref=MEDCouplingFieldDouble.MergeFields([f1_3,f2_3])
+            o2n=ref.getMesh().deepCopy().sortCellsInMEDFileFrmt()
+            ref.renumberCells(o2n)
+            ref.setTime(*t2) ; ref.getArray()[:]+=2000
+            tester.assertTrue(ref.isEqual(zeF2_3,1e-12,1e-12))
+        CheckMFD(self,mfd)
+        mfd1.write(fname1,2) ; mfd2.write(fname2,2)
+        mfd=MEDFileData.Aggregate([MEDFileData(fname1),MEDFileData(fname2)])
+        CheckMFD(self,mfd)
+        pass
+
+    def testExtrudedMesh1(self):
+        fname="Pyfile107.med"
+        arrX=DataArrayDouble([0,1,2,3]) ; arrY=DataArrayDouble([0,1,2,3,4]) ; arrZ=DataArrayDouble([0,1,2,3,4,5])
+        mesh3D=MEDCouplingCMesh() ; mesh3D.setCoords(arrX,arrY,arrZ) ; mesh3D.setName("mesh")
+        ex=MEDCouplingMappedExtrudedMesh(mesh3D)
+        mm=MEDFileUMesh(ex)
+        mm.write(fname,2)
+        ex2=mm.convertToExtrudedMesh()
+        mm2=MEDFileMesh.New(fname)
+        ex3=mm2.convertToExtrudedMesh()
+        self.assertTrue(ex.isEqual(ex2,1e-12))
+        self.assertTrue(ex.isEqual(ex3,1e-12))
+        pass
+    
+    @unittest.skipUnless(LooseVersion(MEDFileVersionStr())>=LooseVersion('3.2.1'),"This test requires at least MEDFile version 3.2.1")
+    @unittest.skipUnless(LooseVersion(MEDFileVersionStr())<LooseVersion('4.0.0'),
+                         "This test is not compatible with MEDFile version 4.0.0 and above")
+    def testWriteInto30(self):
+        fname="Pyfile108.med"
+        fname2="Pyfile109.med"
+        m=MEDCouplingUMesh("mesh",1) ; m.setCoords(DataArrayDouble([0,0,1,1],2,2)) ; m.allocateCells() ; m.insertNextCell(NORM_SEG2,[1,0])
+        mm=MEDFileUMesh() ; mm[0]=m
+        mm.setFamilyId("FAMILLE_ZERO",0)
+        #
+        mm.write30(fname,2)
+        assert(LooseVersion(MEDFileVersionOfFileStr(fname)).version[:2]==[3,0]) # checks that just written MED file has a version == 3.0.x
+        mm2=MEDFileUMesh(fname)
+        self.assertTrue(mm.isEqual(mm2,1e-12))
+        #
+        mm.write(fname2,2)
+        assert(LooseVersion(MEDFileVersionOfFileStr(fname2)).version[:2]==list(MEDFileVersion()[:2])) # checks that MED file version of written mesh is thoose of the current MED file lib
+        pass
+
+    @unittest.skipUnless(MEDCouplingHasNumPyBindings(),"requires numpy")
+    def testPickelizationOfMEDFileObjects1(self):
+        fname="Pyfile110.med"
+        coo=DataArrayDouble([0.,0.,0.5,0.,1.,0.,0.,0.5,0.5,0.5,1.,0.5,0.,1.,0.5,1.,1.,1.],9,2)
+        m0=MEDCouplingUMesh("Mesh",2)
+        m0.allocateCells(5)
+        m0.insertNextCell(NORM_TRI3,[1,4,2])
+        m0.insertNextCell(NORM_TRI3,[4,5,2])
+        m0.insertNextCell(NORM_QUAD4,[0,3,4,1])
+        m0.insertNextCell(NORM_QUAD4,[3,6,7,4])
+        m0.insertNextCell(NORM_QUAD4,[4,7,8,5])
+        m0.finishInsertingCells()
+        m0.setCoords(coo)
+        m1=MEDCouplingUMesh(m0.getName(),1)
+        m1.allocateCells(9)
+        conn1=[0,1,0,3,3,4,4,1,5,4,2,4,1,2,3,6,5,8]
+        for i in range(9):
+            m1.insertNextCell(NORM_SEG2,conn1[2*i:2*i+2])
+            pass
+        m1.finishInsertingCells()
+        m1.setCoords(coo)
+        #
+        m=MEDFileUMesh()
+        m.setMeshAtLevel(0,m0)
+        m.setMeshAtLevel(-1,m1)
+        #
+        dt=3 ; it=2 ; tim=4.5
+        fieldNode0=MEDCouplingFieldDouble(ON_NODES,ONE_TIME)
+        fieldNode0.setName("fieldNode0")
+        fieldNode0.setTime(tim,dt,it)
+        pfl0=DataArrayInt([0,1,2,3,4]) ; pfl0.setName("PflIdentity0") # important to keep like that
+        arr=DataArrayDouble([10,11,12,13,14])
+        fieldNode0.setArray(arr)
+        f0=MEDFileField1TS()
+        f0.setFieldProfile(fieldNode0,m,0,pfl0)
+        fieldNode1=MEDCouplingFieldDouble(ON_NODES,ONE_TIME)
+        fieldNode1.setName("fieldNode1")
+        fieldNode1.setTime(tim,dt,it)
+        pfl1=DataArrayInt([0,1,2,3,4,5,6]) ; pfl1.setName("PflIdentity1")
+        arr1=DataArrayDouble([20,21,22,23,24,25,26])
+        fieldNode1.setArray(arr1)
+        f1=MEDFileField1TS()
+        f1.setFieldProfile(fieldNode1,m,-1,pfl1)
+        mfd=MEDFileData()
+        mfd.setMeshes(MEDFileMeshes()) ; mfd.setFields(MEDFileFields())
+        mfd.getMeshes().pushMesh(m)
+        fmts=MEDFileFieldMultiTS() ; fmts.pushBackTimeStep(f0)
+        mfd.getFields().pushField(fmts)
+        # first start gently
+        d=mfd.serialize()
+        mfd2=MEDFileData(d)
+        self.assertEqual(len(mfd2.getMeshes()),1)
+        self.assertEqual(len(mfd2.getFields()),1)
+        self.assertEqual(len(mfd2.getFields()[0]),1)
+        self.assertTrue(mfd2.getMeshes()[0].isEqual(mfd.getMeshes()[0],1e-12))
+        ff2=mfd2.getFields()[0][0].field(mfd2.getMeshes()[0])
+        ff =mfd.getFields()[0][0].field(mfd.getMeshes()[0])
+        self.assertTrue(ff2.isEqual(ff,1e-12,1e-12))
+        # OK now end of joke -> serialization of MEDFileData
+        st=pickle.dumps(mfd,pickle.HIGHEST_PROTOCOL)
+        mfd3=pickle.loads(st)
+        # check of object
+        self.assertEqual(len(mfd3.getMeshes()),1)
+        self.assertEqual(len(mfd3.getFields()),1)
+        self.assertEqual(len(mfd3.getFields()[0]),1)
+        self.assertTrue(mfd3.getMeshes()[0].isEqual(mfd.getMeshes()[0],1e-12))
+        ff3=mfd3.getFields()[0][0].field(mfd3.getMeshes()[0])
+        self.assertTrue(ff3.isEqual(ff,1e-12,1e-12))
+        # serialization of MEDFileFields
+        st=pickle.dumps(mfd.getFields(),pickle.HIGHEST_PROTOCOL)
+        fs4=pickle.loads(st)
+        ff4=fs4[0][0].field(mfd3.getMeshes()[0])
+        self.assertTrue(ff4.isEqual(ff,1e-12,1e-12))
+        # serialization of MEDFileFieldMulitTS
+        st=pickle.dumps(mfd.getFields()[0],pickle.HIGHEST_PROTOCOL)
+        fmts5=pickle.loads(st)
+        ff5=fmts5[0].field(mfd3.getMeshes()[0])
+        self.assertTrue(ff5.isEqual(ff,1e-12,1e-12))
+        # serialization of MEDFileField1TS
+        st=pickle.dumps(mfd.getFields()[0][0],pickle.HIGHEST_PROTOCOL)
+        f1ts6=pickle.loads(st)
+        ff6=f1ts6.field(mfd3.getMeshes()[0])
+        self.assertTrue(ff6.isEqual(ff,1e-12,1e-12))
+        # serialization of MEDFileMeshes
+        st=pickle.dumps(mfd.getMeshes(),pickle.HIGHEST_PROTOCOL)
+        ms7=pickle.loads(st)
+        self.assertEqual(len(ms7),1)
+        self.assertTrue(ms7[0].isEqual(mfd.getMeshes()[0],1e-12))
+        pass
+
+    @unittest.skipUnless(MEDCouplingHasNumPyBindings(),"requires numpy")
+    def testPickelizationOfMEDFileObjects2(self):
+        # CMesh
+        self.testMEDMesh6() # generates MEDFileMesh5.med file
+        mm=MEDFileMesh.New("MEDFileMesh5.med")
+        self.assertTrue(isinstance(mm,MEDFileCMesh))
+        st=pickle.dumps(mm,pickle.HIGHEST_PROTOCOL)
+        mm2=pickle.loads(st)
+        self.assertTrue(isinstance(mm2,MEDFileCMesh))
+        self.assertTrue(mm.getMesh().isEqual(mm2.getMesh(),1e-12))
+        # CurveLinear
+        self.testCurveLinearMesh1() # generates Pyfile55.med
+        mm=MEDFileMesh.New("Pyfile55.med")
+        self.assertTrue(isinstance(mm,MEDFileCurveLinearMesh))
+        st=pickle.dumps(mm,pickle.HIGHEST_PROTOCOL)
+        mm3=pickle.loads(st)
+        self.assertTrue(isinstance(mm3,MEDFileCurveLinearMesh))
+        self.assertTrue(mm.getMesh().isEqual(mm3.getMesh(),1e-12))
+        self.testInt32InMEDFileFieldStar1()# generates Pyfile63.med
+        # MEDFileIntFieldMultiTS
+        fs4=MEDFileFields("Pyfile63.med")
+        ms4=MEDFileMeshes("Pyfile63.med")
+        self.assertTrue(isinstance(fs4[0],MEDFileIntFieldMultiTS))
+        st=pickle.dumps(fs4[0],pickle.HIGHEST_PROTOCOL)
+        fmts5=pickle.loads(st)
+        self.assertEqual(len(fs4[0]),len(fmts5))
+        self.assertTrue(isinstance(fmts5,MEDFileIntFieldMultiTS))
+        self.assertTrue(fmts5[0].field(ms4[0]).isEqual((fs4[0][0]).field(ms4[0]),1e-12,0))
+        # MEDFileIntField1TS
+        st=pickle.dumps(fs4[0][0],pickle.HIGHEST_PROTOCOL)
+        f1ts6=pickle.loads(st)
+        self.assertTrue(isinstance(f1ts6,MEDFileIntField1TS))
+        self.assertTrue(f1ts6.field(ms4[0]).isEqual((fs4[0][0]).field(ms4[0]),1e-12,0))
+        # MEDFileParameters
+        self.testParameters1()# generates Pyfile56.med
+        params=MEDFileParameters("Pyfile56.med")
+        st=pickle.dumps(params,pickle.HIGHEST_PROTOCOL)
+        params7=pickle.loads(st)
+        self.assertEqual(len(params),len(params7))
+        for i in range(len(params)):
+            self.assertTrue(params[i].isEqual(params7[i],1e-12)[0])
+            pass
+        pass
+
+    def testGlobalNumOnNodes1(self):
+        """Test global number on nodes here. Used by partitionners."""
+        fname="Pyfile112.med"
+        arr=DataArrayDouble(5) ; arr.iota()
+        m=MEDCouplingUMesh.Build1DMeshFromCoords(arr)
+        m.setName("mesh")
+        mm=MEDFileUMesh()
+        mm[0]=m
+        self.assertTrue(not mm.getGlobalNumFieldAtLevel(1))
+        d=DataArrayInt([7,8,9,2,0])
+        dRef=d.deepCopy()
+        mm.setGlobalNumFieldAtLevel(1,d)
+        mm.checkConsistency()
+        self.assertRaises(InterpKernelException,mm.setGlobalNumFieldAtLevel,1,d[::2])
+        mm.checkConsistency()
+        self.assertEqual(d.getHiddenCppPointer(),mm.getGlobalNumFieldAtLevel(1).getHiddenCppPointer())
+        self.assertTrue(mm.getGlobalNumFieldAtLevel(1).isEqual(dRef))
+        mm.write(fname,2)
+        mm2=MEDFileMesh.New(fname)
+        self.assertTrue(mm.isEqual(mm2,1e-12)[0])
+        self.assertTrue(mm2.getGlobalNumFieldAtLevel(1).isEqual(dRef))
+        mm2.getGlobalNumFieldAtLevel(1).setIJ(0,0,10)
+        self.assertTrue(not mm.isEqual(mm2,1e-12)[0])
+        mm2.getGlobalNumFieldAtLevel(1).setIJ(0,0,7)
+        self.assertTrue(mm.isEqual(mm2,1e-12)[0])
+        pass
+
+    def testPartialReadOfEntities1(self):
+        """Test for advanced API on read to speed up read phase for users with "huge" number of time steps (more than 10 000)."""
+        fname="Pyfile113.med"
+        arr=DataArrayDouble(5) ; arr.iota()
+        m=MEDCouplingUMesh.Build1DMeshFromCoords(arr)
+        m.setName("mesh")
+        mm=MEDFileUMesh()
+        mm[0]=m
+        #
+        fieldName="Field"
+        ts1=(5.,1,2)
+        f1=MEDCouplingFieldDouble(ON_NODES) ; f1.setMesh(m) ; f1.setName(fieldName)
+        f1.setArray(DataArrayDouble([0.,0.1,0.2,0.3,0.4]))
+        f1.setTime(*ts1)
+        f2=MEDCouplingFieldDouble(ON_CELLS) ; f2.setMesh(m) ; f2.setName(fieldName)
+        f2.setArray(DataArrayDouble([1.,1.1,1.2,1.3]))
+        f2.setTime(*ts1)
+        f1ts=MEDFileField1TS()
+        f1ts.setFieldNoProfileSBT(f1)
+        f1ts.setFieldNoProfileSBT(f2)
+        self.assertEqual(set(f1ts.getTypesOfFieldAvailable()),set([ON_NODES,ON_CELLS]))
+        f1ts_2=f1ts.deepCopy()
+        f1ts_2.getUndergroundDataArray()[:]+=2
+        f1ts_2.setTime(3,4,6.)
+        fmts=MEDFileFieldMultiTS()
+        fmts.pushBackTimeStep(f1ts)
+        fmts.pushBackTimeStep(f1ts_2)
+        #
+        mm.write(fname,2)
+        fmts.write(fname,0)
+        #
+        ent=MEDFileEntities.BuildFrom([(ON_NODES,NORM_ERROR)])
+        mm=MEDFileMesh.New(fname)
+        fs=MEDFileFields(fname,False,ent) # the important line is here - We specify to MEDFileFields to read only nodes part to speed up read phase (by avoiding to scan all entities time geo types)
+        fs.loadArrays()
+        self.assertEqual(len(fs),1)
+        fmts=fs[0]
+        self.assertEqual(len(fmts),2)
+        ff0=fmts[0] ; ff1=fmts[1]
+        self.assertEqual(ff0.getTypesOfFieldAvailable(),[ON_NODES]) # only NODES have been loaded
+        self.assertTrue(ff0.field(mm).isEqual(f1,1e-12,1e-12))
+        f3=f1.deepCopy() ; f3+=2. ; f3.setTime(6.,3,4)
+        self.assertTrue(ff1.field(mm).isEqual(f3,1e-12,1e-12))
+        pass
+    
+    def testFloat32InMEDFileFieldStar1(self):
+        """Like testInt32InMEDFileFieldStar1 but with float32 :)"""
+        fname="Pyfile114.med"
+        f1=MEDLoaderDataForTest.buildVecFieldOnCells_1();
+        f1=f1.convertToFloatField()
+        m1=f1.getMesh()
+        mm1=MEDFileUMesh.New()
+        mm1.setCoords(m1.getCoords())
+        mm1.setMeshAtLevel(0,m1)
+        mm1.setName(m1.getName())
+        mm1.write(fname,2)
+        ff1=MEDFileFloatField1TS()
+        ff1.setFieldNoProfileSBT(f1)
+        a=ff1.getFieldOnMeshAtLevel(0,ON_CELLS,mm1)
+        self.assertEqual(a.getArray().getInfoOnComponents(),['power [MW/m^3]','density [g/cm^3]','temperature [K]'])
+        self.assertTrue(a.isEqual(f1,1e-12,1e-12))
+        ff1.write(fname,0)
+        a,b=ff1.getUndergroundDataArrayExt()
+        self.assertEqual(a.getHiddenCppPointer(),ff1.getUndergroundDataArray().getHiddenCppPointer())
+        self.assertEqual(b,[((3,0),(0,2)),((4,0),(2,4)),((6,0),(4,5)),((5,0),(5,6))])
+        ff2=MEDFileAnyTypeField1TS.New(fname)
+        self.assertEqual(ff2.getName(),"VectorFieldOnCells")
+        self.assertEqual(ff2.getTime(),[0,1,2.0])
+        self.assertTrue(isinstance(ff2,MEDFileFloatField1TS))
+        a=ff1.getFieldOnMeshAtLevel(ON_CELLS,0,mm1)
+        self.assertEqual(a.getArray().getInfoOnComponents(),['power [MW/m^3]','density [g/cm^3]','temperature [K]'])
+        self.assertTrue(a.isEqual(f1,1e-12,1e-12))
+        ff2.setTime(1,2,3.)
+        c=ff2.getUndergroundDataArray() ; c*=2
+        ff2.write(fname,0) # 2 time steps in 
+        ffs1=MEDFileAnyTypeFieldMultiTS.New(fname,"VectorFieldOnCells")
+        self.assertEqual(ffs1.getTimeSteps(),[(0, 1, 2.0), (1, 2, 3.0)])
+        self.assertEqual(len(ffs1),2)
+        self.assertTrue(isinstance(ffs1,MEDFileFloatFieldMultiTS))
+        a=ffs1[2.].getFieldOnMeshAtLevel(ON_CELLS,0,mm1)
+        self.assertTrue(a.isEqual(f1,1e-12,1e-12))
+        a=ffs1.getFieldOnMeshAtLevel(ON_CELLS,0,1,0,mm1)
+        self.assertTrue(a.isEqual(f1,1e-12,1e-12))
+        it=ffs1.__iter__() ; it.next() ; ff2bis=it.next()
+        a=ff2bis.getFieldOnMeshAtLevel(0,ON_CELLS,mm1)
+        self.assertTrue(a.getArray().isEqual(2*f1.getArray(),1e-7))
+        f1.setTime(3.,1,2) ; f1.getArray()[:]*=2
+        self.assertTrue(a.isEqual(f1,1e-12,1e-12)) ; f1.getArray()[:]/=2
+        bc=DataArrayFloat(6,3) ; bc[:]=0 ; bc.setInfoOnComponents(['power [MW/m^3]','density [g/cm^3]','temperature [K]'])
+        for it in ffs1:
+            a=it.getFieldOnMeshAtLevel(ON_CELLS,0,mm1)
+            bc+=a.getArray()
+            pass
+        self.assertTrue(bc.isEqual(3*f1.getArray(),1e-7))
+        nf1=MEDCouplingFieldFloat(ON_NODES)
+        nf1.setTime(9.,10,-1)
+        nf1.setMesh(f1.getMesh())
+        narr=DataArrayFloat(12,2) ; narr.setInfoOnComponents(["aa [u1]","bbbvv [ppp]"]) ; narr[:,0]=list(range(12)) ; narr[:,1]=2*narr[:,0]
+        nf1.setName("VectorFieldOnNodes") ; nf1.setArray(narr)
+        nff1=MEDFileFloatField1TS.New()
+        nff1.setFieldNoProfileSBT(nf1)
+        self.assertEqual(nff1.getInfo(),('aa [u1]','bbbvv [ppp]'))
+        self.assertEqual(nff1.getTime(),[10,-1,9.0])
+        nff1.write(fname,0)
+        #
+        nf2=MEDCouplingFieldFloat(ON_NODES)
+        nf2.setTime(19.,20,-11)
+        nf2.setMesh(f1.getMesh())
+        narr2=DataArrayFloat(8,2) ; narr.setInfoOnComponents(["aapfl [u1]","bbbvvpfl [ppp]"]) ; narr2[:,0]=list(range(8)) ; narr2[:,0]+=10  ; narr2[:,1]=3*narr2[:,0]
+        nf2.setName("VectorFieldOnNodesPfl") ; narr2.setName(nf2.getName()) ; nf2.setArray(narr2)
+        nff2=MEDFileFloatField1TS.New()
+        npfl=DataArrayInt([1,2,4,5,6,7,10,11]) ; npfl.setName("npfl")
+        nff2.setFieldProfile(nf2,mm1,0,npfl)
+        nff2.getFieldWithProfile(ON_NODES,0,mm1)
+        a,b=nff2.getFieldWithProfile(ON_NODES,0,mm1) ; b.setName(npfl.getName())
+        self.assertTrue(b.isEqual(npfl))
+        self.assertTrue(a.isEqual(narr2,1e-7))
+        nff2.write(fname,0)
+        nff2bis=MEDFileFloatField1TS(fname,"VectorFieldOnNodesPfl")
+        a,b=nff2bis.getFieldWithProfile(ON_NODES,0,mm1) ; b.setName(npfl.getName())
+        self.assertTrue(b.isEqual(npfl))
+        self.assertTrue(a.isEqual(narr2,1e-7))
+        #
+        nf3=MEDCouplingFieldDouble(ON_NODES)
+        nf3.setName("VectorFieldOnNodesDouble")
+        nf3.setTime(29.,30,-21)
+        nf3.setMesh(f1.getMesh())
+        nf3.setArray(f1.getMesh().getCoords())
+        nff3=MEDFileField1TS.New()
+        nff3.setFieldNoProfileSBT(nf3)
+        nff3.write(fname,0)
+        fs=MEDFileFields(fname)
+        self.assertEqual(len(fs),4)
+        ffs=[it for it in fs]
+        self.assertTrue(isinstance(ffs[0],MEDFileFloatFieldMultiTS))
+        self.assertTrue(isinstance(ffs[1],MEDFileFloatFieldMultiTS))
+        self.assertTrue(isinstance(ffs[2],MEDFileFieldMultiTS))
+        self.assertTrue(isinstance(ffs[3],MEDFileFloatFieldMultiTS))
+        #
+        self.assertTrue(fs["VectorFieldOnCells"][0].getUndergroundDataArray().isEqualWithoutConsideringStr(f1.getArray(),1e-7))
+        self.assertTrue(fs["VectorFieldOnCells"][1,2].getUndergroundDataArray().isEqualWithoutConsideringStr(2*f1.getArray(),1e-7))
+        self.assertTrue(fs["VectorFieldOnNodesPfl"][0].getUndergroundDataArray().isEqualWithoutConsideringStr(narr2,1e-7))
+        self.assertTrue(fs["VectorFieldOnNodes"][9.].getUndergroundDataArray().isEqualWithoutConsideringStr(narr,1e-7))
+        self.assertTrue(fs["VectorFieldOnNodesDouble"][29.].getUndergroundDataArray().isEqualWithoutConsideringStr(f1.getMesh().getCoords(),1e-12))
+        #
+        nf3_read=MEDFileFieldMultiTS(fname,"VectorFieldOnNodesDouble")
+        self.assertTrue(nf3_read[29.].getUndergroundDataArray().isEqualWithoutConsideringStr(f1.getMesh().getCoords(),1e-12))
+        self.assertRaises(InterpKernelException,MEDFileFloatFieldMultiTS.New,fname,"VectorFieldOnNodesDouble")# exception because trying to read a double field with int instance
+        self.assertRaises(InterpKernelException,MEDFileFieldMultiTS.New,fname,"VectorFieldOnNodes")# exception because trying to read a int field with double instance
+        MEDFileField1TS.New(fname,"VectorFieldOnNodesDouble",30,-21)
+        self.assertRaises(InterpKernelException,MEDFileFloatField1TS.New,fname,"VectorFieldOnNodesDouble",30,-21)# exception because trying to read a double field with int instance
+        MEDFileFloatField1TS.New(fname,"VectorFieldOnNodes",10,-1)
+        self.assertRaises(InterpKernelException,MEDFileField1TS.New,fname,"VectorFieldOnNodes",10,-1)# exception because trying to read a double field with int instance
+        #
+        self.assertEqual(fs.getMeshesNames(),('3DSurfMesh_1','3DSurfMesh_1','3DSurfMesh_1','3DSurfMesh_1'))
+        self.assertTrue(fs.changeMeshNames([('3DSurfMesh_1','3DSurfMesh')]))
+        self.assertEqual(fs.getMeshesNames(),('3DSurfMesh','3DSurfMesh','3DSurfMesh','3DSurfMesh'))
+        self.assertTrue(not fs.changeMeshNames([('3DSurfMesh_1','3DSurfMesh')]))
+        pass
+
+    def testPenta18_1(self):
+        """EDF8478 : Test of read/write of penta18"""
+        fname="Pyfile115.med"
+        arr=DataArrayDouble([
+            (0.,1.,1.),(0.,0.,1.),(1.,0.,1.),
+            (0.,1.,0.),(0.,0.,0.),(1.,0.,0.),
+            (0.,0.5,1.),(0.5,0.,1.),(0.5,0.5,1.),
+            (0.,0.5,0.),(0.5,0.,0.),(0.5,0.5,0.),
+            (0.,1.,0.5),(0.,0.,0.5),(1.,0.,0.5),
+            (0.,0.5,0.5),(0.5,0.,0.5),(0.5,0.5,0.5)])
+        m=MEDCouplingUMesh("mesh",3)
+        m.setCoords(arr)
+        m.allocateCells(1)
+        m.insertNextCell(NORM_PENTA18,list(range(18)))
+        m.checkConsistencyLight()
+        #
+        f=MEDCouplingFieldDouble(ON_NODES)
+        f.setMesh(m)
+        f.setName("FieldOnPenta18")
+        f.setArray(DataArrayDouble(list(range(18))))
+        f.checkConsistencyLight()
+        #
+        m2,d,di,rd,rdi=m.buildDescendingConnectivity()
+        #
+        f2=MEDCouplingFieldDouble(ON_NODES)
+        f2.setMesh(m)
+        f2.setName("FieldOnPenta18Sub")
+        f2.setArray(DataArrayDouble(list(range(18))))
+        f2.checkConsistencyLight()
+        WriteField(fname,f2,True)
+        f3=ReadField(fname)
+        self.assertTrue(f2.isEqual(f3,1e-12,1e-12))
+        self.assertEqual(f3.getMesh().getNumberOfCells(),1)
+        self.assertEqual(f3.getMesh().getTypeOfCell(0),NORM_PENTA18)
+        pass
+
+    @unittest.skipUnless('linux'==platform.system().lower(),"stderr redirection not ported on Windows ?")
+    @unittest.skipUnless(LooseVersion(MEDFileVersionStr())<LooseVersion('4.0.0'),
+                         "This test is not compatible with MEDFile version 4.0.0 and above")
+    def testMedFileCapabilityToCryOnNewFeatureWritingIntoOldFiles(self):
+        fname="Pyfile116.med"
+        errfname="Pyfile116.err"
+        c=DataArrayDouble([0,1,2,3])
+        m=MEDCouplingCMesh()
+        m.setCoords(c,c)
+        m=m.buildUnstructured()
+        m.setName("mesh")
+        mm=MEDFileUMesh()
+        mm[0]=m
+        f=MEDCouplingFieldInt(ON_CELLS)
+        f.setMesh(m) ; arr2=DataArrayInt(m.getNumberOfCells()) ; arr2.iota()
+        f.setArray(arr2)
+        f.setName("field")
+        f1ts=MEDFileIntField1TS()
+        f1ts.setFieldNoProfileSBT(f)
+        mm.write30(fname,2)
+        f1ts.write30(fname,0)
+        #
+        f=MEDCouplingFieldFloat(ON_CELLS)
+        f.setMesh(m) ; arr2=DataArrayFloat(m.getNumberOfCells()) ; arr2.iota()
+        f.setArray(arr2)
+        f.setName("field2")
+        f1ts=MEDFileFloatField1TS()
+        f1ts.setFieldNoProfileSBT(f)
+        #
+        import os,gc
+        tmp=StdOutRedirect(errfname)
+        self.assertRaises(InterpKernelException,f1ts.write30,fname,0)
+        del tmp
+        gc.collect(0)
+        if os.path.exists(errfname):
+            os.remove(errfname)
+        pass
+
+    def testFieldsLinearToQuadratic(self):
+        arr=DataArrayDouble([0,1])
+        m=MEDCouplingCMesh();
+        m.setCoords(arr,arr,arr)
+        m=m.buildUnstructured()
+        m2=m.deepCopy()
+        m2.translate([2,0,0])
+        m3=MEDCouplingUMesh.MergeUMeshes([m,m2])
+        m3.setName("mesh")
+        mm=MEDFileUMesh()
+        mm[0]=m3
+        mmq=mm.linearToQuadratic(0)
+        mms=MEDFileMeshes() ; mms.pushMesh(mm)
+        mmsq=MEDFileMeshes() ; mmsq.pushMesh(mmq)
+        #
+        f=MEDCouplingFieldDouble(ON_NODES)
+        f.setName("field")
+        f.setMesh(m3)
+        f.setTime(3.,1,2)
+        arr=DataArrayDouble(m3.getNumberOfNodes())
+        arr.iota()
+        f.setArray(arr)
+        f1ts=MEDFileField1TS()
+        f1ts.setFieldNoProfileSBT(f)
+        fmts=MEDFileFieldMultiTS()
+        fmts.pushBackTimeStep(f1ts)
+        fs=MEDFileFields()
+        fs.pushField(fmts)
+        fs2=fs.linearToQuadratic(mms,mmsq)
+        #
+        fToTest=fs2[0][0].field(mmq)
+        self.assertEqual(fToTest.getTime(),[3.,1,2])
+        mTest=MEDCoupling1SGTUMesh(fToTest.getMesh())
+        self.assertTrue(mTest.getNodalConnectivity().isEqual(DataArrayInt([1,0,2,3,5,4,6,7,16,17,18,19,20,21,22,23,24,25,26,27,9,8,10,11,13,12,14,15,28,29,30,31,32,33,34,35,36,37,38,39])))
+        self.assertTrue(mTest.getCoords().isEqual(DataArrayDouble([0.,0.,0.,1.,0.,0.,0.,1.,0.,1.,1.,0.,0.,0.,1.,1.,0.,1.,0.,1.,1.,1.,1.,1.,2.,0.,0.,3.,0.,0.,2.,1.,0.,3.,1.,0.,2.,0.,1.,3.,0.,1.,2.,1.,1.,3.,1.,1.,0.5, 0.,0.,0.,0.5, 0.,0.5, 1.,0.,1.,0.5, 0.,0.5, 0.,1.,0.,0.5, 1.,0.5, 1.,1.,1.,0.5, 1.,1.,0.,0.5, 0.,0.,0.5, 0.,1.,0.5, 1.,1.,0.5, 2.5, 0.,0.,2.,0.5, 0.,2.5, 1.,0.,3.,0.5, 0.,2.5, 0.,1.,2.,0.5, 1.,2.5, 1.,1.,3.,0.5, 1.,3.,0.,0.5, 2.,0.,0.5, 2.,1.,0.5, 3.,1.,0.5],40,3),1e-12))
+        self.assertTrue(fToTest.getArray().isEqual(DataArrayDouble([0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,0.5,1,2.5,2,4.5,5,6.5,6,3,2,4,5,8.5,9,10.5,10,12.5,13,14.5,14,11,10,12,13]),1e-12))
+        pass
+    
     pass
 
 if __name__ == "__main__":
-  unittest.main()
+    unittest.main()