2023-02-19 08:22:52 -08:00

9 lines
252 B
Python

>>> laureates = nobel.groupby(["id", "firstname", "surname"])
>>> sizes = laureates.size()
>>> sizes[sizes > 1]
id firstname surname
6 Marie Curie 2
66 John Bardeen 2
217 Linus Pauling 2
222 Frederick Sanger 2