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-rw-r--r--Lib/importlib/_bootstrap_external.py3
1 files changed, 2 insertions, 1 deletions
diff --git a/Lib/importlib/_bootstrap_external.py b/Lib/importlib/_bootstrap_external.py
index 08ddb2b17f..6e2ddb5b7d 100644
--- a/Lib/importlib/_bootstrap_external.py
+++ b/Lib/importlib/_bootstrap_external.py
@@ -29,7 +29,8 @@ def _make_relax_case():
if sys.platform.startswith(_CASE_INSENSITIVE_PLATFORMS):
def _relax_case():
"""True if filenames must be checked case-insensitively."""
- return b'PYTHONCASEOK' in _os.environ
+ return (b'PYTHONCASEOK' in _os.environ
+ or 'PYTHONCASEOK' in _os.environ)
else:
def _relax_case():
"""True if filenames must be checked case-insensitively."""