Add checks for unsupported characters within image path and output path

Wrapping/Generators/Python/itk/support/extras.py

@@ -1261,6 +1261,27 @@ def imwrite(
     The writer is instantiated with the image type of the image in
     parameter (or, again, with the output image of the filter in parameter).
     """
+
+    # Check if output path exists
+    msg = ""
+    if not os.path.isdir(os.path.dirname(filename)):
+        msg += "\nThe output dir doesn't exist. \n" + f"Filename = {filename}"
+        raise RuntimeError(
+            f"Could not create IO object for writing file {filename}" + msg
+        )
+    # Check if path contains unsupported special characters
+    else:
+        try:
+            filename.encode("ascii")
+        except UnicodeEncodeError:
+            msg += (
+                "\nThe output path contains unsupported special characters for ascii encoding.\n"
+                + f"Filename = {filename}"
+            )
+            raise RuntimeError(
+                f"Could not create IO object for writing file {filename}" + msg
+            )
+
     import itk
 
     img = itk.output(image_or_filter)

Wrapping/Generators/Python/itk/support/template_class.py

@@ -158,6 +158,15 @@ def firstIfList(arg):
             msg = ""
             if not os.path.isfile(inputFileName):
                 msg += "\nThe file doesn't exist. \n" + f"Filename = {inputFileName}"
+            # Check if image path contains not supported special characters.
+            else:
+                try:
+                    inputFileName.encode("ascii")
+                except UnicodeEncodeError:
+                    msg += (
+                        "\nThe image path contains not supported special characters. \n"
+                        + f"Filename = {inputFileName}"
+                    )
             raise RuntimeError(
                 f"Could not create IO object for reading file {inputFileName}" + msg
             )