| commit | 3f10a952f6056b6797e4187bcfa1a97c21d1b3bb | [log] [tgz] |
|---|---|---|
| author | Raymond Hettinger <python@rcn.com> | Wed Apr 01 19:05:50 2009 +0000 |
| committer | Raymond Hettinger <python@rcn.com> | Wed Apr 01 19:05:50 2009 +0000 |
| tree | fd77e13d51d8e407ecc12a206b67cbb670ee88bc | |
| parent | 0759dd66c581a65381412a2ff98dac8edd58ddee [diff] [blame] |
Issue #5647: MutableSet.__iand__() no longer mutates self during iteration.
diff --git a/Lib/_abcoll.py b/Lib/_abcoll.py index 45747a6..7b01178 100644 --- a/Lib/_abcoll.py +++ b/Lib/_abcoll.py
@@ -320,10 +320,9 @@ self.add(value) return self - def __iand__(self, c: Container): - for value in self: - if value not in c: - self.discard(value) + def __iand__(self, it: Iterable): + for value in (self - it): + self.discard(value) return self def __ixor__(self, it: Iterable):