Index.is_unique = None

Series.str()

Series.add(other, level=None, fill_value=None, axis=0)

CategoricalIndex.codes

CategoricalIndex.str()

Series.iteritems()

DataFrame.__iter__()

DatetimeIndex.is_monotonic alias for is_monotonic_increasing (deprecated)

DatetimeIndex.tz_localize(*args, **kwargs)

CategoricalIndex.is_monotonic_increasing return if the index is monotonic increasing (only