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PEP compliance: use is not #142575

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PEP compliance: use is not
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@AZero13
AZero13 committed Dec 11, 2025
commit 17de842ce3b849b3b230b56a02c0aa0acce3187d
2 changes: 1 addition & 1 deletion Lib/dataclasses.py
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Original file line number Diff line number Diff line change
Expand Up @@ -527,7 +527,7 @@ def add_fns_to_class(self, cls):
if already_exists and (msg_extra := self.overwrite_errors.get(name)):
error_msg = (f'Cannot overwrite attribute {fn.__name__} '
f'in class {cls.__name__}')
if not msg_extra is True:
if msg_extra is not True:
error_msg = f'{error_msg} {msg_extra}'

raise TypeError(error_msg)
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2 changes: 1 addition & 1 deletion Lib/wsgiref/validate.py
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Expand Up @@ -179,7 +179,7 @@ def start_response_wrapper(*args, **kw):
environ['wsgi.errors'] = ErrorWrapper(environ['wsgi.errors'])

iterator = application(environ, start_response_wrapper)
assert_(iterator is not None and iterator != False,
assert_(iterator is not None and iterator is not False,
"The application must return an iterator, if only an empty list")

check_iterator(iterator)
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