python函数返回值是不是整形

# -*- coding: UTF-8 -*-

def sum(num1,num2):

    # 两数之和

    if not (isinstance (num1,(int ,float)) or isinstance (num2,(int ,float))):

        raise TypeError('参数类型错误')

    return num1+num2

print(sum(1,2))

3

def  division ( num1, num2 ):

    # 求商与余数

         a = num1 % num2

         b = (num1-a) / num2

         return b , a

num1 , num2 = division(9,4)

tuple1 = division(9,4)

print (num1,num2)

print (tuple1)

2.0 1

(2.0, 1)