| commit | 66c4a6b51cea40215e8f61e1abe2e3d89c4aeb1e | [log] [tgz] |
|---|---|---|
| author | Raymond Hettinger <python@rcn.com> | Wed Apr 01 18:50:56 2009 +0000 |
| committer | Raymond Hettinger <python@rcn.com> | Wed Apr 01 18:50:56 2009 +0000 |
| tree | 9514206018d91419cad25cdfdc9f8f4084270935 | |
| parent | 449b7d95d46f0b2e8a1fd73642d391ac3a29518e [diff] [blame] |
Issue #5647: MutableSet.__iand__() no longer mutates self during iteration.
diff --git a/Lib/_abcoll.py b/Lib/_abcoll.py index 40cc23e..990ff00 100644 --- a/Lib/_abcoll.py +++ b/Lib/_abcoll.py
@@ -286,10 +286,9 @@ self.add(value) return self - def __iand__(self, c): - for value in self: - if value not in c: - self.discard(value) + def __iand__(self, it): + for value in (self - it): + self.discard(value) return self def __ixor__(self, it):