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第三题

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__吖糖

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def str2float(s): return reduce(lambda x,y:x10+y,map(int,s.replace('.','')))/(10*len(s[-s.index('.'):]))

__吖糖

#2 Created at ... [Delete] [Delete and Lock User]

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def str2float(s): return reduce(lambda x,y:x*10+y,map(int,s.replace('.','')))/(10**len(s[-s.index('.'):]))

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