filesys.py 文件源码

def open_str(self, name: str, encoding='utf8'):
        """Open a file in unicode mode or raise FileNotFoundError.

        The return value is a StringIO in-memory buffer.
        """
        with self:
            # File() calls with the VPK object we need directly.
            if isinstance(name, VPKFile):
                file = name
            else:
                try:
                    file = self._ref[name]
                except KeyError:
                    raise FileNotFoundError(name)
            # Wrap the data to treat it as bytes, then
            # wrap that to decode and clean up universal newlines.
            return io.TextIOWrapper(io.BytesIO(file.read()), encoding)