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Change assertion into the loop invariant #500

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Change assertion into the loop invariant #500

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6 changes: 3 additions & 3 deletions src/dotenv/main.py
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Original file line number Diff line number Diff line change
Expand Up @@ -299,10 +299,10 @@ def _is_interactive():
frame = sys._getframe()
current_file = __file__

while frame.f_code.co_filename == current_file or not os.path.exists(
frame.f_code.co_filename
while frame.f_back is not None and (
frame.f_code.co_filename == current_file
or not os.path.exists(frame.f_code.co_filename)
):
assert frame.f_back is not None
frame = frame.f_back
frame_filename = frame.f_code.co_filename
path = os.path.dirname(os.path.abspath(frame_filename))
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