fix the WeakSet keyError bug

2018-09-10 15:54:02 +08:00 · 2018-09-10 15:54:02 +08:00 · d19d6476a3
parent 6d33b1178d
commit d19d6476a3
1 changed files with 3 additions and 1 deletions
--- a/tqdm/_tqdm.py
+++ b/tqdm/_tqdm.py
@ -478,7 +478,9 @@ class tqdm(Comparable):
        """
        with cls._lock:
            try:
-                cls._instances.remove(instance)
+                if instance in cls._instances:
+                    # in python2 instance maybe magically removed from cls._instances
+                    cls._instances.remove(instance)
            except KeyError:
                if not instance.gui:  # pragma: no cover
                    raise