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gh-105834: Add tests for calling issubclass() between two protocols #105835

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merged 3 commits into from
Jun 16, 2023
Merged

gh-105834: Add tests for calling issubclass() between two protocols #105835

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6ac4e7d
Remove dead code in `typing.py`
AlexWaygood Jun 15, 2023
dd75fb3
Fix
AlexWaygood Jun 16, 2023
aad6502
Moar assertions
AlexWaygood Jun 16, 2023
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7 changes: 0 additions & 7 deletions Lib/typing.py
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Original file line number Diff line number Diff line change
Expand Up @@ -1925,13 +1925,6 @@ def _proto_hook(other):
if base.__dict__[attr] is None:
return NotImplemented
break

# ...or in annotations, if it is a sub-protocol.
annotations = getattr(base, '__annotations__', {})
if (isinstance(annotations, collections.abc.Mapping) and
attr in annotations and
issubclass(other, Generic) and getattr(other, '_is_protocol', False)):
break
else:
return NotImplemented
return True
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