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bpo-35712: Make using NotImplemented in a boolean context issue a deprecation warning (GH-13195)

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MojoVampire 2020-03-03 18:50:17 +00:00 • committed by GitHub
parent ae75a29435
commit 469325c30e
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10 changed files with 64 additions and 12 deletions
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4
Lib/functools.py
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@ -96,6 +96,8 @@ def _gt_from_lt(self, other, NotImplemented=NotImplemented):
def _le_from_lt(self, other, NotImplemented=NotImplemented):
'Return a <= b. Computed by @total_ordering from (a < b) or (a == b).'
op_result = self.__lt__(other)
if op_result is NotImplemented:
return op_result
return op_result or self == other
def _ge_from_lt(self, other, NotImplemented=NotImplemented):
@ -136,6 +138,8 @@ def _lt_from_gt(self, other, NotImplemented=NotImplemented):
def _ge_from_gt(self, other, NotImplemented=NotImplemented):
'Return a >= b. Computed by @total_ordering from (a > b) or (a == b).'
op_result = self.__gt__(other)
if op_result is NotImplemented:
return op_result
return op_result or self == other
def _le_from_gt(self, other, NotImplemented=NotImplemented):