utils.py 文件源码

def get_storage_hash(storage):
    """
    Return a hex string hash for a storage object (or string containing
    'full.path.ClassName' referring to a storage object).
    """
    # If storage is wrapped in a lazy object we need to get the real thing.
    if isinstance(storage, LazyObject):
        if storage._wrapped is None:
            storage._setup()
        storage = storage._wrapped
    if not isinstance(storage, six.string_types):
        storage_cls = storage.__class__
        storage = '%s.%s' % (storage_cls.__module__, storage_cls.__name__)
    return hashlib.md5(storage.encode('utf8')).hexdigest()