如何在不出现 NameError 的情况下将不同目录中的函数导入到我的主代码中？

Question

I'm using Python 3.8.5. I was aiming at creating a simple addition function (and yes, I'm aware Python has an in-built one). I created the function satisfactorily, but wasn't able to import it to the program of my choice. I keep getting NameErrors, saying that the name of my function has not been defined. Here's the code to the function:

def add_func(x, y):
    sum = x + y
    sum_str = str(sum)
    print("The sum is " + sum_str)

And here's where the issues begin:

import sys
import os
sys.path.append('C:\\Users\\User_name\\Desktop\\Folder\\PYTHON\\Functions')
import addition
x = (input("Enter no. 1: "))
y = (input("Enter no. 2: "))
add_func(x,y)

I have an init file in the folder named Functions. I've scoured the web for hours searching for a solution to my problem, but have been unable to find one that: a) I can understand (still learning Python) b) Has worked

I'd really appreciate it if somebody could guide me on how to fix this issue, and explain to me what I've done wrong (dumb it down as much as possible)

Answer 1

If addition is the name of your .py file, and it has been successfully imported, then to use your add_func function you would need to write:

addition.add_func(x, y)

If you wanted to be able to use it without the addition., you can change the import statement to:

from addition import add_func