为什么我的自定义 function 不能从 Python 中的文件编辑器执行？

Question

I recently started a Python course on Udemy. I couldn't get a grasp on the return function.

For example, in the following simple program:

def f(a, b):
    x = a + b
    return x

f(3, 3)

Simply executing this as a.py will not display the result 6

However, manually executing f(3, 3) in the console will display 6

Could I get some intuition or explanation as to what is happening here?

I'm running Python 3.8.3 on Windows 10

Answer 1

You've defined the function in the script, but have not called it anywhere.

You need to call it and store the result in a variable.

Your script should be like this:

def f(a, b):
    x = a + b
    return x

result = f(3,3)
print(result)

Finally you will run python a.py