Fix patching of Debian-specific tempfile

- Debian patches tempfile by importing shutil.rmtree as _rmtree
 (see https://salsa.debian.org/cpython-team/python3/-/blob/master/debian/patches/min-tempfile.diff)
- this cached version of _rmtree was not patched, so we replace it
  with the original (patched) version from shutil

Author: mrbean-bremen

CHANGES.md

@@ -13,6 +13,11 @@ The released versions correspond to PyPI releases.
   the real filesystem behavior
 * remove support for Python versions before 3.10 (if needed, patches may be backported to the 5.x branch)
 
+### Unreleased
+
+## Fixes
+* fixes patching of Debian-specific `tempfile` in Python 3.13 (see [#1214](../../issues/1214))
+
 ## [Version 5.9.3](https://pypi.python.org/pypi/pyfakefs/5.9.3) (2025-08-28)
 Fixes a utility method.
 

pyfakefs/fake_filesystem_unittest.py

@@ -98,6 +98,7 @@ class TempfilePatcher:
 
     def __init__(self):
         self.tempfile_cleanup = None
+        self.tempfile_rmtree = None
 
     def start_patching(self):
         if self.tempfile_cleanup is not None:
@@ -109,6 +110,16 @@ def cleanup(self_, windows=(os.name == "nt"), unlink=None):
 
             self.tempfile_cleanup = tempfile._TemporaryFileCloser.cleanup  # type: ignore[module-attr]
             tempfile._TemporaryFileCloser.cleanup = cleanup  # type: ignore[module-attr]
+
+            if sys.version_info >= (3, 13) and hasattr(tempfile, "_rmtree"):
+                # Debian patches tempfile by importing or copying shutil.rmtree as _rmtree
+                # we patch this to use the original (patched) version
+                def _rmtree(*args, **kwargs):
+                    return tempfile._shutil.rmtree(*args, **kwargs)
+
+                self.tempfile_rmtree = tempfile._rmtree  # type: ignore[module-attr]
+                tempfile._rmtree = _rmtree  # type: ignore[module-attr]
+
         elif sys.platform != "win32":
 
             def close(self_, unlink=None):
@@ -125,6 +136,9 @@ def stop_patching(self):
         else:
             tempfile._TemporaryFileCloser.cleanup = self.tempfile_cleanup  # type: ignore[module-attr]
         self.tempfile_cleanup = None
+        if self.tempfile_rmtree is not None:
+            tempfile._rmtree = self.tempfile_rmtree  # type: ignore[module-attr]
+            self.tempfile_rmtree = None
         # reset the cached tempdir in tempfile
         tempfile.tempdir = None
 
@@ -1063,12 +1077,13 @@ def start_patching(self) -> None:
             self._paused = False
 
             self.linecache_patcher.start_patching()
-            self.tempfile_patcher.start_patching()
 
             self.patch_modules()
             self.patch_functions()
             self.patch_defaults()
+
             self._set_glob_os_functions()
+            self.tempfile_patcher.start_patching()
 
             self._dyn_patcher = DynamicPatcher(self)
             sys.meta_path.insert(0, self._dyn_patcher)

pyfakefs/tests/fake_tempfile_test.py

@@ -18,7 +18,6 @@
 
 import os
 import stat
-import sys
 import tempfile
 import unittest
 
@@ -89,10 +88,6 @@ def test_mkdtemp(self):
         self.assertTrue(self.fs.exists(dirname))
         self.assertEqual(self.fs.get_object(dirname).st_mode, stat.S_IFDIR | 0o700)
 
-    @unittest.skipIf(
-        sys.version_info[:3] == (3, 13, 5),
-        "Not working on Debian with this version, see #1214",
-    )
     def test_temporary_directory(self):
         with tempfile.TemporaryDirectory() as tmpdir:
             self.assertTrue(tmpdir)