Method pop

celery/utils/collections.py:228–234

(self, key, *default)

        self.maps.insert(1, d)

    def pop(self, key, *default):
        # type: (Any, *Any) -> Any
        try:
            return self.maps[0].pop(key, *default)
        except KeyError:
            raise KeyError(
                f'Key not found in the first mapping: {key!r}')

    def __missing__(self, key):
        # type: (Any) -> Any