s3transfer/utils.py
def finalize(self):
        """Finalize the counter

        Once finalized, the counter never be incremented and the callback
        can be invoked once the count reaches zero
        """
        with self._lock:
            self._is_finalized = True
            if self._count == 0:
                self._callback()
def finalize(self):
        """Finalize the counter

        Once finalized, the counter never be incremented and the callback
        can be invoked once the count reaches zero
        """
        with self._lock:
            self._is_finalized = True
            if self._count == 0:
                self._callback()
Finalize the counter

        Once finalized, the counter never be incremented and the callback
        can be invoked once the count reaches zero