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