from functools import reduce
def str2float(s): def char2num(s): return {'0':0, '1': 1, '2': 2, '3': 3, '4': 4, '5': 5, '6': 6, '7': 7, '8': 8, '9': 9}[s] def fn(x,y): return x 10 + y L = list(s) for i in range(len(L)): if L[-i] == '.': L.pop(-i) num1 = reduce(fn,map(char2num,L)) num2 = num1/10*(i-1) print(num2) str2float('112.32')
发错了，，各位大佬不要介意
这是后面的题
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吼kk
from functools import reduce
def str2float(s): def char2num(s): return {'0':0, '1': 1, '2': 2, '3': 3, '4': 4, '5': 5, '6': 6, '7': 7, '8': 8, '9': 9}[s] def fn(x,y): return x 10 + y L = list(s) for i in range(len(L)): if L[-i] == '.': L.pop(-i) num1 = reduce(fn,map(char2num,L)) num2 = num1/10*(i-1) print(num2) str2float('112.32')