DatetimeIndex.ndim return the number of dimensions of the underlying data, by definition 1

MultiIndex.identical(other)

Styler.clear()

Panel4D.add(other, axis=0)

Series.autocorr(lag=1)

DataFrameGroupBy.rank(axis=0, method='average', numeric_only=None, na_option='keep', ascending=True, pct=False)

Series.get_values()

DataFrame.append(other, ignore_index=False, verify_integrity=False)

DatetimeIndex.memory_usage(deep=False)

TimedeltaIndex.argmin(axis=None, *args, **kwargs)