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gpt改的

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from functools import reduce

def str2num(s):

    try:

        return int(s)

    except ValueError:

        return float(s)

def calc(exp):

    # 去除表达式中的空格

    exp = exp.replace(' ', '')

    ss = exp.split('+')

    ns = map(str2num, ss)

    return reduce(lambda acc, x: acc + x, ns)

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()


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