Class ColNoIter

Lib/test/test_collections.py:1105–1107

                                                   '__contains__')
        # Check sized container non-iterable (which is not Collection) etc.
        class ColNoIter:
            def __len__(self): return 0
            def __contains__(self, item): return False
        class ColNoSize:
            def __iter__(self): return iter([])
            def __contains__(self, item): return False