Series.cat.reorder_categories(*args, **kwargs)

DataFrame.expanding(min_periods=1, freq=None, center=False, axis=0)

Panel4D.to_pickle(path)

DatetimeIndex.summary(name=None)

Note The SparsePanel class has been removed in 0.19.0 We have

Panel.xs(key, axis=1)

GroupBy.indices dict {group name -> group indices}

For potential users coming from SAS this page is meant

Panel.to_sql(name, con, flavor=None, schema=None, if_exists='fail', index=True, index_label=None, chunksize=None, dtype=None)

Index.sortlevel(level=None, ascending=True, sort_remaining=None)