diff options
Diffstat (limited to 'Lib/_abcoll.py')
| -rw-r--r-- | Lib/_abcoll.py | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/Lib/_abcoll.py b/Lib/_abcoll.py index cc4c442..8a8c0ee 100644 --- a/Lib/_abcoll.py +++ b/Lib/_abcoll.py @@ -143,7 +143,7 @@ class Container(metaclass=ABCMeta): class Callable(metaclass=ABCMeta): @abstractmethod - def __contains__(self, x): + def __call__(self, *args, **kwds): return False @classmethod @@ -225,7 +225,8 @@ class Set(Sized, Iterable, Container): def __or__(self, other): if not isinstance(other, Iterable): return NotImplemented - return self._from_iterable(itertools.chain(self, other)) + chain = (e for s in (self, other) for e in s) + return self._from_iterable(chain) def __sub__(self, other): if not isinstance(other, Set): |