Series.str.pad(width, side='left', fillchar=' ')

Series.str.endswith(pat, na=nan)

Series.add_suffix(suffix)

Series.drop_duplicates(*args, **kwargs)

Series.argsort(axis=0, kind='quicksort', order=None)

Series.pct_change(periods=1, fill_method='pad', limit=None, freq=None, **kwargs)

Series.size return the number of elements in the underlying data

Series.loc Purely label-location based indexer for selection by label. .loc[] is primarily label based

Series.base return the base object if the memory of the underlying data is shared

Series.str.match(pat, case=True, flags=0, na=nan, as_indexer=False)