media.py 文件源码

def get_media_size(media_io):
        if hasattr(media_io, "getvalue"):
            size = len(media_io.getvalue())
        elif hasattr(media_io, "seekable") and media_io.seekable():
            media_io.seek(0, SEEK_END)
            size = media_io.tell()
            media_io.seek(SEEK_SET)
        else:
            raise DontwiMediaError
        return size