def add_num(a,b):
    result=a+b
    print(result)

add_num(3,44)

def buy():
    return '烟'

goods=buy()
print(goods)


a =int(input('输入内容：'))
b = int(input('输入内容：'))
def add_num2(a,b):
    """求和函数
    换行
    """

    return a+b

result1 = add_num2(a,b)
print(result1)
help(add_num2)