container.py 文件源码

def __init__(self, f, summary=True):
        """Args:
         + f: Either a file name or a seekable binary stream.
         + summary: If True, call self.read_summary().
        """
        super().__init__(0)
        if isinstance(f, IOBase):
            self.stream = f
        else:
            self.stream = open(f, 'rb')
        self.stream.seek(0, SEEK_END)
        self.stream_size = self.stream.tell()
        self.stream.seek(0, SEEK_SET)

        if summary:
            self.read_summary()