Index.is_(other)

DatetimeIndex.nbytes return the number of bytes in the underlying data

Series.to_hdf(path_or_buf, key, **kwargs)

Series.last(offset)

DataFrame.pipe(func, *args, **kwargs)

Series.head(n=5)

DatetimeIndex.dropna(how='any')

MultiIndex.tolist()

CategoricalIndex.identical(other)

CategoricalIndex.is_floating()