mirrors/cpython
1
0
Fork 0
mirror of https://github.com/python/cpython.git synced 2025-08-30 21:48:47 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 9

Gave __xor__/symmetric_difference a factor of 2-5 speed boost.

Browse source
This commit is contained in:
Tim Peters 2002-08-25 19:47:54 +00:00
parent 37faed2532
commit 334b4a5c39
1 changed files with 6 additions and 4 deletions
Download patch file Download diff file Expand all files Collapse all files

10
Lib/sets.py
View file

@ -197,11 +197,13 @@ class BaseSet(object):
result = self.__class__()
data = result._data
value = True
for elt in self:
if elt not in other:
selfdata = self._data
otherdata = other._data
for elt in selfdata:
if elt not in otherdata:
data[elt] = value
for elt in other:
if elt not in self:
for elt in otherdata:
if elt not in selfdata:
data[elt] = value
return result