Issue #9137: Fix issue in MutableMapping.update, which incorrectly
treated keyword arguments called 'self' or 'other' specially.
diff --git a/Lib/_abcoll.py b/Lib/_abcoll.py
index e9f06a5..cc00fd9 100644
--- a/Lib/_abcoll.py
+++ b/Lib/_abcoll.py
@@ -480,7 +480,15 @@
except KeyError:
pass
- def update(self, other=(), **kwds):
+ def update(*args, **kwds):
+ if len(args) > 2:
+ raise TypeError("update() takes at most 2 positional "
+ "arguments ({} given)".format(len(args)))
+ elif not args:
+ raise TypeError("update() takes at least 1 argument (0 given)")
+ self = args[0]
+ other = args[1] if len(args) >= 2 else ()
+
if isinstance(other, Mapping):
for key in other:
self[key] = other[key]