Method keys

tests/test_code/py/pytz/lazy.py:60–68

(self)

        return len(self.data)

    def keys(self):
        if self.data is None:
            _fill_lock.acquire()
            try:
                if self.data is None:
                    self._fill()
            finally:
                _fill_lock.release()
        return self.data.keys()


class LazyList(list):