使用map和reduce函数将str转换为float
- 作者: 段友457123
- 来源: 51数据库
- 2022-08-17
def str2float(s):
def str2int(ns):
return {'0': 0, '1': 1, '2': 2, '3': 3, '4': 4, '5': 5, '6': 6, '7': 7, '8': 8, '9': 9}[ns]
def f(x,y):
return x*10+y
resultNum = 0
numL = s.split('.')
for index,numS in enumerate(numL):
if index==0:
resultNum = resultNum + reduce(f,map(str2int,numS))
else:
resultNum = resultNum + reduce(f,map(str2int,numS))*pow(10,0-len(numS))
return resultNum
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