def delete(self, key, version=None):
        key = self.make_key(key, version=version)
        self.validate_key(key)
        try:
            self._delete(self._key_to_file(key))
        except (__HOLE__, OSError):
            pass
dataset/ETHPy150Open cloudera/hue/desktop/core/ext-py/Django-1.6.10/django/core/cache/backends/filebased.py/FileBasedCache.delete