matplotlib
diff --git a/‎lib/matplotlib/_pylab_helpers.py
Copy file name to clipboardExpand all lines: lib/matplotlib/_pylab_helpers.py
+2Lines changed: 2 additions & 0 deletions b/‎lib/matplotlib/_pylab_helpers.py
Copy file name to clipboardExpand all lines: lib/matplotlib/_pylab_helpers.py
+2Lines changed: 2 additions & 0 deletions
@@ -57,6 +57,8 @@ def destroy(cls, num):
             manager = num
             if cls.figs.get(manager.num) is manager:
                 cls.figs.pop(manager.num)
+            else:
+                return
         else:
             try:
                 manager = cls.figs.pop(num)