from functools import reduce from math import pow 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] def str2float(s): l = len(s.split('.')[1]) s = s.replace('.','') return reduce(lambda x,y:10*x+y,map(char2num,s))/pow(10,l)
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东林读书人
from functools import reduce from math import pow 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] def str2float(s): l = len(s.split('.')[1]) s = s.replace('.','') return reduce(lambda x,y:10*x+y,map(char2num,s))/pow(10,l)