Series.dt.is_quarter_end Logical indicating if last day of quarter (defined by frequency)

Series.dt.hour The hours of the datetime

Series.str.count(pat, flags=0, **kwargs)

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

Series.str.istitle()

Series.str.index(sub, start=0, end=None)

Series.dt.strftime(*args, **kwargs)

Series.str.isalpha()

Series.isin(values)

Series.strides return the strides of the underlying data