gh-127350: Add Py_fopen() function

Doc/c-api/sys.rst

@@ -240,11 +240,6 @@ Operating System Utilities
 
    Call ``fclose(file)``.
 
-   This function is needed on Windows: ``FILE*`` files opened by
-   :c:func:`Py_fopen` in the Python DLL must be closed by the Python DLL to use
-   the same C runtime version. Otherwise, calling ``fclose()`` directly can
-   cause undefined behavior.
-
    .. versionadded:: next
 
 

Doc/whatsnew/3.14.rst

@@ -1048,7 +1048,7 @@ New features
 * Add :c:func:`Py_fopen` function to open a file. Similar to the
   :c:func:`!fopen` function, but the *path* parameter is a Python object and an
   exception is set on error. Add also :c:func:`Py_fclose` function to close a
-  file, function needed for Windows support.
+  file.
   (Contributed by Victor Stinner in :gh:`127350`.)
 
 Porting to Python 3.14

Python/fileutils.c

@@ -1839,9 +1839,9 @@ Py_fopen(PyObject *path, const char *mode)
 
 // Call fclose().
 //
-// This function is needed on Windows: FILE* files opened by Py_fopen() in the
-// Python DLL must be closed by the Python DLL to use the same C runtime
-// version. Otherwise, calling fclose() directly can cause undefined behavior.
+// On Windows, files opened by Py_fopen() in the Python DLL must be closed by
+// the Python DLL to use the same C runtime version. Otherwise, calling
+// fclose() directly can cause undefined behavior.
 int
 Py_fclose(FILE *file)
 {