KeysView (reference) in projects: external

443 class KeysView(MappingView, Set):  class
456 KeysView.register(type({}.viewkeys()))

177         self.assertIsInstance(d.viewkeys(), collections.KeysView)

5686 - Issue #9214: Set operations on KeysView or ItemsView in the collections

/external/python/cpython2/Lib/
D	_abcoll.py	`443 class KeysView(MappingView, Set): class 456 KeysView.register(type({}.viewkeys()))`
D	collections.py	`236 return KeysView(self)`
/external/python/cpython2/Lib/test/
D	test_dictviews.py	`177 self.assertIsInstance(d.viewkeys(), collections.KeysView)`
/external/python/cpython2/Doc/library/
D	collections.rst	937 :class:`KeysView` :class:`MappingView`, ``__contains__``, 978 KeysView
/external/python/cpython2/Misc/
D	NEWS	`5686 - Issue #9214: Set operations on KeysView or ItemsView in the collections`