bpo-35918: Remove broken has_key method and add test (GH-11819) (#11824)

(cherry picked from commit a31f4cc881)

Co-authored-by: Rémi Lapeyre <remi.lapeyre@henki.fr>

Lib/multiprocessing/managers.py

@@ -1135,7 +1135,7 @@ def __imul__(self, value):
 
 DictProxy = MakeProxyType('DictProxy', (
     '__contains__', '__delitem__', '__getitem__', '__iter__', '__len__',
-    '__setitem__', 'clear', 'copy', 'get', 'has_key', 'items',
+    '__setitem__', 'clear', 'copy', 'get', 'items',
     'keys', 'pop', 'popitem', 'setdefault', 'update', 'values'
     ))
 DictProxy._method_to_typeid_ = {

Lib/test/_test_multiprocessing.py

@@ -4768,8 +4768,6 @@ def _test_dict(cls, obj):
         assert len(obj) == 1
         assert obj['foo'] == 5
         assert obj.get('foo') == 5
-        # TODO: fix https://bugs.python.org/issue35918
-        # assert obj.has_key('foo')
         assert list(obj.items()) == [('foo', 5)]
         assert list(obj.keys()) == ['foo']
         assert list(obj.values()) == [5]

Misc/NEWS.d/next/Library/2019-02-11-16-23-10.bpo-35918.oGDlpT.rst

@@ -0,0 +1,2 @@
+Removed broken ``has_key`` method from
+multiprocessing.managers.SyncManager.dict. Contributed by Rémi Lapeyre.