def __contains__(self, key):
        try:
            wr = ref(key)
        except __HOLE__:
            return 0
        return wr in self.data
dataset/ETHPy150Open Southpaw-TACTIC/TACTIC/src/context/client/tactic-api-python-4.0.api04/Lib/weakref.py/WeakKeyDictionary.__contains__