[Introduction to Udemy Python3 + Application] 49. Function citation and return value declaration

** * This article is from Udemy "[Introduction to Python3 taught by active Silicon Valley engineers + application + American Silicon Valley style code style](https://www.udemy.com/course/python-beginner/" Introduction to Python3 taught by active Silicon Valley engineers + application + American Silicon Valley style code style ")" It is a class notebook for myself after taking the course of. It is open to the public with permission from the instructor Jun Sakai. ** **

■ Function citation and return value declaration

function


# a,b,The return value is an int type, and a+Returns b
def add_num(a: int, b: int) -> int:
    return a + b

r = add_num(10, 20)
print(r)

result


30

In Python3.6 and above num: int = 10 Then " Num = 10 and num should be int type", I was able to describe it like this.

-> Int is "Make the return value an int type" means.

There aren't many cases like this, but I may write something like this, so put it in the corner of your head.

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