__init__.py 文件源码

def delete_memoized_verhash(self, f, *args):
        """
        Delete the version hash associated with the function.

        ..warning::

            Performing this operation could leave keys behind that have
            been created with this version hash. It is up to the application
            to make sure that all keys that may have been created with this
            version hash at least have timeouts so they will not sit orphaned
            in the cache backend.
        """
        if not callable(f):
            raise DeprecationWarning("Deleting messages by relative name is no longer"
                          " reliable, please use a function reference")

        try:
            self._memoize_version(f, delete=True)
        except Exception:
            if current_app.debug:
                raise
            logger.exception("Exception possibly due to cache backend.")