diff options
| -rw-r--r-- | Lib/_abcoll.py | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/Lib/_abcoll.py b/Lib/_abcoll.py index 75a8072..89d4179 100644 --- a/Lib/_abcoll.py +++ b/Lib/_abcoll.py @@ -293,6 +293,7 @@ class MutableSet(Set): self.discard(value) else: self.add(value) + return self def __isub__(self, it): for value in it: |