Series.argsort(axis=0, kind='quicksort', order=None)

Series.nunique(dropna=True)

Series.add_suffix(suffix)

Series.strides return the strides of the underlying data

Series.str.isalpha()

class pandas.Series(data=None, index=None, dtype=None, name=None, copy=False, fastpath=False)

Series.filter(items=None, like=None, regex=None, axis=None)

Series.str.extract(pat, flags=0, expand=None)

Series.order(na_last=None, ascending=True, kind='quicksort', na_position='last', inplace=False)

Series.to_frame(name=None)