cursor_formatters.py 文件源码

def serialize(cls, formatted_data, fh):
        # compat: if pandas is old, to_pickle does not accept file handles
        if LooseVersion(pd.__version__) <= LooseVersion('0.20.3'):
            fh.close()
            fh = fh.name
        return pd.to_pickle(formatted_data, fh)