from functools import reduce
 
def str2num(s):
    if '.' in s:    # 如果字符串中有小数点，则转换为浮点数
        return float(s)
    return int(s)
 
def calc(exp):
    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()
 
# your code goes here

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