Index.nbytes return the number of bytes in the underlying data

DataFrame.to_json(path_or_buf=None, orient=None, date_format='epoch', double_precision=10, force_ascii=True, date_unit='ms', default_handler=None

Styler.use(styles)

MultiIndex.fillna(value=None, downcast=None)

Series.dropna(axis=0, inplace=False, **kwargs)

Series.ffill(axis=None, inplace=False, limit=None, downcast=None)

Panel4D.set_value(*args, **kwargs)

EWM.mean(*args, **kwargs)

DataFrame.round(decimals=0, *args, **kwargs)

pandas.read_table(filepath_or_buffer, sep='\t', delimiter=None, header='infer', names=None, index_col=None, usecols=None, squeeze=False, prefix=None