Non-unique - python coding challenges - Py.CheckiO

Non-unique

Can anyone explain why this:

def checkio(data): for x in data: if(data.count(x)==1): data.remove(x) return data

return [2,4] for [1,2,3,4,5] input data? I'm confused...

Created at: Feb. 11, 2017, 10:12 a.m.; Updated at: Feb. 12, 2017, 7:34 a.m.

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