import FiniteVolumes2DDiffusion_SQUARE
+import matplotlib
+matplotlib.use("Agg")
import matplotlib.pyplot as plt
import numpy as np
from math import log10,sqrt
import FiniteVolumes2DDiffusion_SQUARE
+import matplotlib
+matplotlib.use("Agg")
import matplotlib.pyplot as plt
import numpy as np
from math import log10,sqrt
import FiniteVolumes2DDiffusion_SQUARE
+import matplotlib
+matplotlib.use("Agg")
import matplotlib.pyplot as plt
import numpy as np
from math import log10, sqrt
import FiniteVolumes2DDiffusion_SQUARE
+import matplotlib
+matplotlib.use("Agg")
import matplotlib.pyplot as plt
import numpy as np
from math import log10, sqrt
import FiniteVolumes2DDiffusion_SQUARE
+import matplotlib
+matplotlib.use("Agg")
import matplotlib.pyplot as plt
import numpy as np
from math import log10,sqrt
import FiniteVolumes2DDiffusion_SQUARE
+import matplotlib
+matplotlib.use("Agg")
import matplotlib.pyplot as plt
import numpy as np
from math import log10, sqrt
import FiniteVolumes2DDiffusion_SQUARE
+import matplotlib
+matplotlib.use("Agg")
import matplotlib.pyplot as plt
import numpy as np
from math import log10,sqrt
import FiniteVolumes2DDiffusion_SQUARE
+import matplotlib
+matplotlib.use("Agg")
import matplotlib.pyplot as plt
import numpy as np
from math import log10, sqrt
import cdmath
import FiniteVolumes2DDiffusion_SQUARE
+import matplotlib
+matplotlib.use("Agg")
import matplotlib.pyplot as plt
import numpy as np
from math import log10, sqrt
import cdmath
import FiniteVolumes2DDiffusion_SQUARE
+import matplotlib
+matplotlib.use("Agg")
import matplotlib.pyplot as plt
import numpy as np
from math import log10, sqrt
import FiniteVolumes2DDiffusion_SQUARE
+import matplotlib
+matplotlib.use("Agg")
import matplotlib.pyplot as plt
import numpy as np
from math import log10, sqrt
import FiniteVolumes2DPoisson_SQUARE
+import matplotlib
+matplotlib.use("Agg")
import matplotlib.pyplot as plt
import numpy as np
from math import log10,sqrt
import FiniteVolumes2DPoissonStiffBC_DISK
+import matplotlib
+matplotlib.use("Agg")
import matplotlib.pyplot as plt
import numpy as np
from math import log10, sqrt
import FiniteVolumes2DPoissonStiffBC_DISK
+import matplotlib
+matplotlib.use("Agg")
import matplotlib.pyplot as plt
import numpy as np
from math import log10, sqrt
import FiniteVolumes2DPoissonStiffBC_DISK
+import matplotlib
+matplotlib.use("Agg")
import matplotlib.pyplot as plt
import numpy as np
from math import log10, sqrt
import FiniteVolumes2DPoissonStiffBC_DISK
+import matplotlib
+matplotlib.use("Agg")
import matplotlib.pyplot as plt
import numpy as np
from math import log10, sqrt
import FiniteVolumes2DPoissonStiffBC_SQUARE
+import matplotlib
+matplotlib.use("Agg")
import matplotlib.pyplot as plt
import numpy as np
from math import log10, sqrt
import FiniteVolumes2DPoissonStiffBC_SQUARE
+import matplotlib
+matplotlib.use("Agg")
import matplotlib.pyplot as plt
import numpy as np
from math import log10, sqrt
import FiniteVolumes2DPoissonStiffBC_SQUARE
+import matplotlib
+matplotlib.use("Agg")
import matplotlib.pyplot as plt
import numpy as np
from math import log10, sqrt
import FiniteVolumes2DPoisson_SQUARE
+import matplotlib
+matplotlib.use("Agg")
import matplotlib.pyplot as plt
import numpy as np
from math import log10,sqrt
import FiniteVolumes2DPoisson_SQUARE
+import matplotlib
+matplotlib.use("Agg")
import matplotlib.pyplot as plt
import numpy as np
from math import log10, sqrt
import FiniteVolumes2DPoisson_SQUARE
+import matplotlib
+matplotlib.use("Agg")
import matplotlib.pyplot as plt
import numpy as np
from math import log10, sqrt
import FiniteVolumes2DPoisson_SQUARE
+import matplotlib
+matplotlib.use("Agg")
import matplotlib.pyplot as plt
import numpy as np
from math import log10,sqrt
import cdmath
import FiniteVolumes2DPoisson_SQUARE
+import matplotlib
+matplotlib.use("Agg")
import matplotlib.pyplot as plt
import numpy as np
from math import log10, sqrt
import FiniteVolumes2DPoisson_SQUARE
+import matplotlib
+matplotlib.use("Agg")
import matplotlib.pyplot as plt
import numpy as np
from math import log10, sqrt
import FiniteVolumes2DPoisson_SQUARE
+import matplotlib
+matplotlib.use("Agg")
import matplotlib.pyplot as plt
import numpy as np
from math import log10,sqrt
import FiniteVolumes2DPoisson_SQUARE
+import matplotlib
+matplotlib.use("Agg")
import matplotlib.pyplot as plt
import numpy as np
from math import log10, sqrt
import cdmath
import FiniteVolumes2DPoisson_SQUARE
+import matplotlib
+matplotlib.use("Agg")
import matplotlib.pyplot as plt
import numpy as np
from math import log10, sqrt
import cdmath
import FiniteVolumes2DPoisson_SQUARE
+import matplotlib
+matplotlib.use("Agg")
import matplotlib.pyplot as plt
import numpy as np
from math import log10, sqrt
import cdmath
import FiniteVolumes2DPoisson_SQUARE
+import matplotlib
+matplotlib.use("Agg")
import matplotlib.pyplot as plt
import numpy as np
from math import log10, sqrt
import FiniteVolumes2DPoisson_SQUARE
+import matplotlib
+matplotlib.use("Agg")
import matplotlib.pyplot as plt
import numpy as np
from math import log10, sqrt
import FiniteVolumes3DPoisson_CUBE
+import matplotlib
+matplotlib.use("Agg")
import matplotlib.pyplot as plt
import numpy as np
from math import log10, sqrt
import cdmath
import FiniteVolumes3DPoisson_CUBE
+import matplotlib
+matplotlib.use("Agg")
import matplotlib.pyplot as plt
import numpy as np
from math import log10, sqrt
import FiniteVolumes3DPoisson_CUBE
+import matplotlib
+matplotlib.use("Agg")
import matplotlib.pyplot as plt
import numpy as np
from math import log10, sqrt