filesys.py 文件源码

def open_bin(self, name: str):
        """Open a file in bytes mode or raise FileNotFoundError.

        The filesystem needs to be open while accessing this.
        """
        self._check_open()

        # We need the zipinfo object.
        if isinstance(name, ZipInfo):
            info = name
        else:
            name = name.replace('\\', '/')
            try:
                info = self._name_to_info[name.casefold()]
            except KeyError:
                raise FileNotFoundError('{}:{}'.format(self.path, name)) from None

        return self._ref.open(info)