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