Fix passing a generator to OrderedDict()

coolreader18 · coolreader18 · commit 60d96c42a397 · 2020-04-02T17:42:00.000-05:00
diff --git a/Lib/_collections_abc.py b/Lib/_collections_abc.py
@@ -836,7 +836,11 @@ def update(*args, **kwds):
                             len(args))
         if args:
             other = args[0]
-            if isinstance(other, Mapping):
+            try:
+                mapping_inst = isinstance(other, Mapping)
+            except TypeError:
+                mapping_inst = False
+            if mapping_inst:
                 for key in other:
                     self[key] = other[key]
             elif hasattr(other, "keys"):
