Series.mean(axis=None, skipna=None, level=None, numeric_only=None, **kwargs)

Series.dt.daysinmonth The number of days in the month New

Series.dt.month The month as January=1, December=12

Series.var(axis=None, skipna=None, level=None, ddof=1, numeric_only=None, **kwargs)

Series.str.ljust(width, fillchar=' ')

Series.str.replace(pat, repl, n=-1, case=True, flags=0)

Series.nonzero()

Series.mode()

Series.all(axis=None, bool_only=None, skipna=None, level=None, **kwargs)

Series.view(dtype=None)