1df.to_csv(path_or_buf=None, sep=',', na_rep='', float_format=None,
2 columns=None, header=True, index=True, index_label=None,
3 mode='w', encoding=None, compression='infer',
4 quoting=None, quotechar='"', line_terminator=None,
5 chunksize=None, date_format=None, doublequote=True,
6 escapechar=None, decimal='.', errors='strict')