DatetimeIndex.has_duplicates

DatetimeIndex.searchsorted(key, side='left', sorter=None)

DataFrame.pow(other, axis='columns', level=None, fill_value=None)

CategoricalIndex.remove_unused_categories(*args, **kwargs)

CategoricalIndex.max(*args, **kwargs)

CategoricalIndex.itemsize return the size of the dtype of the item of the underlying data

GroupBy.size()

TimedeltaIndex.flags

DataFrame.last_valid_index()

DatetimeIndex.to_datetime(dayfirst=False)