Index.argsort(*args, **kwargs)

DataFrameGroupBy.resample(rule, *args, **kwargs)

DataFrame.isnull()

Series.head(n=5)

CategoricalIndex.hasnans = None

DataFrame.sem(axis=None, skipna=None, level=None, ddof=1, numeric_only=None, **kwargs)

DataFrame.to_dict(orient='dict')

Panel.to_excel(path, na_rep='', engine=None, **kwargs)

CategoricalIndex.item()

DataFrame.get(key, default=None)