Fix bug with Python warning messages not redirected when sys.stderr is redirected

diff --git a/src/KERNEL_PY/kernel/deprecation.py b/src/KERNEL_PY/kernel/deprecation.py
index 588b4162566975eba2fa75123a91ddf0b39d2787..ebd1b30021691ae346d97bb2b9753e0b7399c435 100644 (file)
--- a/src/KERNEL_PY/kernel/deprecation.py
+++ b/src/KERNEL_PY/kernel/deprecation.py
@@ -149,7 +149,9 @@ def is_called_by_sphinx():
 
 
 def __show_colored_warning(message, category, filename,
-                           lineno, file = sys.stderr, line = None):
+                           lineno, file = None, line = None):
+    if file is None:
+        file = sys.stderr
     str = warnings.formatwarning(message, category, filename, lineno, line)
     if category == DeprecationWarning and termcolor.canDisplayColor(file):
         file.write(termcolor.makeColoredMessage(str, termcolor.BLUE))