DIGITS = {'0': 0, '1': 1, '2': 2, '3': 3, '4': 4, '5': 5, '6': 6, '7': 7, '8': 8, '9': 9} def char2num(s): return DIGITS[s] L=s.split('.') le=len(L[1]) left=reduce(lambda x,y:x*10+y,map(char2num,L[0])) right=reduce(lambda x,y:x*10+y,map(char2num,L[1])) return left+10**-le*right
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严肃的笨小孩