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看了评论才有了思路。。

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永恒是个旧念想

#1 Created at ... [Delete] [Delete and Lock User] 
def str2float(s):    L = s.split('.')    L0 = L[0]    L1 = L[1]    digits = {'0':0,'1': 1, '2': 2, '3': 3, '4': 4, '5': 5, '6': 6, '7': 7, '8': 8, '9': 9}    L0 =  list(map(lambda x: digits[x],L0))    L1 = list(map(lambda x: digits[x], L1))    return reduce(lambda x,y: x*10 + y, L0) + reduce(lambda  x, y : x*10 +y, L1) * 10 ** (-len(L1))

永恒是个旧念想

#2 Created at ... [Delete] [Delete and Lock User] 
def str2float(s):    L = s.split('.')    L0 = L[0]    L1 = L[1]    digits = {'0':0,'1': 1, '2': 2, '3': 3, '4': 4, '5': 5, '6': 6, '7': 7, '8': 8, '9': 9}    L0 =  list(map(lambda x: digits[x],L0))    L1 = list(map(lambda x: digits[x], L1))    return reduce(lambda x,y: x*10 + y, L0) + reduce(lambda  x, y : x*10 +y, L1) * 10 ** (-len(L1))

永恒是个旧念想

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

这咋排版。。

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