Merge topic 'python313-fixes-2'

65470923 Add 'encoding' to vtkPythonInterpreter IO streams

Acked-by: Kitware Robot <kwrobot@kitware.com>
Tested-by: buildbot <buildbot@kitware.com>
Reviewed-by: Ben Boeckel <ben.boeckel@kitware.com>
Merge-request: !11494

Utilities/PythonInterpreter/vtkPythonStdStreamCaptureHelper.h

@@ -16,7 +16,8 @@ VTK_ABI_NAMESPACE_BEGIN
 struct vtkPythonStdStreamCaptureHelper
 {
   PyObject_HEAD
-  int softspace; // Used by print to keep track of its state.
+  int softspace;        // Used by print to keep track of its state.
+  const char* Encoding; // Encoding, set to "utf-8"
   bool DumpToError;
 
   void Write(const char* string)
@@ -84,6 +85,9 @@ static PyMemberDef vtkPythonStdStreamCaptureHelperMembers[] = {
   { VTK_PYTHON_MEMBER_DEF_STR("softspace"), T_INT,
     offsetof(vtkPythonStdStreamCaptureHelper, softspace), 0,
     VTK_PYTHON_MEMBER_DEF_STR("Placeholder so print can keep state.") },
+  { VTK_PYTHON_MEMBER_DEF_STR("encoding"), T_STRING,
+    offsetof(vtkPythonStdStreamCaptureHelper, Encoding), READONLY,
+    VTK_PYTHON_MEMBER_DEF_STR("Text encoding for file.") },
   { nullptr, 0, 0, 0, nullptr }
 };
 
@@ -250,6 +254,7 @@ static vtkPythonStdStreamCaptureHelper* NewPythonStdStreamCaptureHelper(bool for
     PyObject_New(vtkPythonStdStreamCaptureHelper, &vtkPythonStdStreamCaptureHelperType);
   if (wrapper)
   {
+    wrapper->Encoding = "utf-8";
     wrapper->DumpToError = for_stderr;
   }