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Gave __sub__/difference a factor of 2-5 speed boost.

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This commit is contained in:
Tim Peters 2002-08-25 19:50:43 +00:00
parent 334b4a5c39
commit b8940393e9
1 changed files with 2 additions and 1 deletions
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3
Lib/sets.py
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@ -223,9 +223,10 @@ def __sub__(self, other):
return NotImplemented
result = self.__class__()
data = result._data
otherdata = other._data
value = True
for elt in self:
if elt not in other:
if elt not in otherdata:
data[elt] = value
return result