https://github.com/python/cpython/commit/8704d6b39139d2b1c3dd871590188fb7deb8aaad
commit: 8704d6b39139d2b1c3dd871590188fb7deb8aaad
branch: main
author: Miro HronĨok <m...@hroncok.cz>
committer: malemburg <m...@lemburg.com>
date: 2025-05-27T10:25:12+02:00
summary:

gh-62824: Adjust test_alias_modules_exist test to use imports instead of file 
checks (#134777)

files:
M Lib/test/test_codecs.py

diff --git a/Lib/test/test_codecs.py b/Lib/test/test_codecs.py
index 8c9a0972492294..d8666f7290e72e 100644
--- a/Lib/test/test_codecs.py
+++ b/Lib/test/test_codecs.py
@@ -1,6 +1,7 @@
 import codecs
 import contextlib
 import copy
+import importlib
 import io
 import pickle
 import os
@@ -3111,9 +3112,9 @@ def test_aliases(self):
     def test_alias_modules_exist(self):
         encodings_dir = os.path.dirname(encodings.__file__)
         for value in encodings.aliases.aliases.values():
-            codec_file = os.path.join(encodings_dir, value + ".py")
-            self.assertTrue(os.path.isfile(codec_file),
-                            "Codec file not found: " + codec_file)
+            codec_mod = f"encodings.{value}"
+            self.assertIsNotNone(importlib.util.find_spec(codec_mod),
+                                 f"Codec module not found: {codec_mod}")
 
     def test_quopri_stateless(self):
         # Should encode with quotetabs=True

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