DataFrame.add(other, axis='columns', level=None, fill_value=None)

DataFrame.set_value(index, col, value, takeable=False)

DataFrame.to_stata(fname, convert_dates=None, write_index=True, encoding='latin-1', byteorder=None, time_stamp=None, data_label=None, v

DataFrame.max(axis=None, skipna=None, level=None, numeric_only=None, **kwargs)

DataFrame.info(verbose=None, buf=None, max_cols=None, memory_usage=None, null_counts=None)

DataFrame.plot.density(**kwds)

DataFrame.median(axis=None, skipna=None, level=None, numeric_only=None, **kwargs)