Series.count(level=None)
Series.eq(other, level=None, fill_value=None, axis=0)
Series.cat.codes
Series.str.zfill(width)
Series.str.ljust(width, fillchar=' ')
Series.asfreq(freq, method=None, how=None, normalize=False)
Series.dt.weekofyear The week ordinal of the year
Series.between(left, right, inclusive=True)
Series.ravel(order='C')
Series.last_valid_index()
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