def str2float(s): s1,s2=s.split('.') num1 = reduce(lambda x,y:x*10+y,map(char2num,s1)) num2 = reduce(lambda x,y:x*10+y,map(char2num,s2)) num2 = num2*0.1**len(s2) return num1+num2 def char2num(s): digits = {'0': 0, '1': 1, '2': 2, '3': 3, '4': 4, '5': 5, '6': 6, '7': 7, '8': 8, '9': 9} return digits[s]
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关上窗吧_没有虫鸣