用C的人抓错误最顺手

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#1 Created at ... [Delete] [Delete and Lock User]

from functools import reduce

def str2num(s): #字符串转数字

try:

if('.' in s): #通过判断小数点决定

return float(s)

else: #没有小数点

return int(s)

except BaseException as e:

print('发生异常')

logging.exception(e)

def calc(exp): #函数

ss = exp.split('+')#以+分隔

print(ss) #打印发现问题

ns = map(str2num, ss) #迭代

return reduce(lambda acc, x: acc + x, ns)#将函数作用在每个元素

def main():

r = calc('100 + 200 + 345')

print('100 + 200 + 345 =', r)

r = calc('99 + 88 + 7.6')

print('99 + 88 + 7.6 =', r)

main()

#2 Created at ... [Delete] [Delete and Lock User]

第一步用log处理，让程序出错了继续跑，暴露所有的问题。

再看出错地方是啥，再改。

#3 Created at ... [Delete] [Delete and Lock User]

不用暴露，int 不行就直接上float

    try:
        return int(s)
    except Exception as e:
        return float(s)