lib.py 文件源码

def open(self, filepath):
        # type: (str) -> IO[str]
        filepath = os.path.normpath(filepath)
        abs_filepath = os.path.join(self._root_dir, filepath)
        if abs_filepath.startswith(self._root_dir):
            return open(abs_filepath)
        else:
            raise PermissionError("Cannot open file \"{}\". Bots may only access "
                                  "files in their local directory.".format(abs_filepath))