Normalize the encoding names for Latin-1 and UTF-8 to
'latin-1' and 'utf-8'.
These are optimized in the Python Unicode implementation
to result in more direct processing, bypassing the codec
registry.
Also see issue11303.
diff --git a/Lib/test/test_argparse.py b/Lib/test/test_argparse.py
index 03c95fa..8d80336 100644
--- a/Lib/test/test_argparse.py
+++ b/Lib/test/test_argparse.py
@@ -4328,7 +4328,7 @@
def _test_module_encoding(self, path):
path, _ = os.path.splitext(path)
path += ".py"
- with codecs.open(path, 'r', 'utf8') as f:
+ with codecs.open(path, 'r', 'utf-8') as f:
f.read()
def test_argparse_module_encoding(self):