media.py 文件源码

def get_mime(self, media_io):
        if hasattr(media_io, "getvalue"):
            buffer = media_io.getvalue()
        elif hasattr(media_io, "seekable") and media_io.seekable():
            buffer = media_io.read(1024)
            media_io.seek(SEEK_SET)
        else:
            raise DontwiMediaError
        return self.magic.from_buffer(buffer)