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inspect: Add some comments in Parameter.__eq__ method

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Yury Selivanov 2014-01-31 15:30:30 -05:00
parent 5334bcdf97
commit 0ba5f0d386
1 changed files with 11 additions and 0 deletions
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11
Lib/inspect.py
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@ -1905,6 +1905,17 @@ class Parameter:
id(self), self.name) id(self), self.name)
def __eq__(self, other): def __eq__(self, other):
# NB: We deliberately do not compare '_partial_kwarg' attributes
# here. Imagine we have a following situation:
#
# def foo(a, b=1): pass
# def bar(a, b): pass
# bar2 = functools.partial(bar, b=1)
#
# For the above scenario, signatures for `foo` and `bar2` should
# be equal. '_partial_kwarg' attribute is an internal flag, to
# distinguish between keyword parameters with defaults and
# keyword parameters which got their defaults from functools.partial
return (issubclass(other.__class__, Parameter) and return (issubclass(other.__class__, Parameter) and
self._name == other._name and self._name == other._name and
self._kind == other._kind and self._kind == other._kind and