How to import variables/functions correctly?

Question

Python

Hello everyone, I'm just learning python and ran into a problem with the logic of importing variables, functions, etc., I'll post a simple example that describes the issue

pesok.py

from autotesting.pesok import add
print(add)

pesok2.py

zxc = 1234567890
print(zxc)
add = 2

The idea is this: I run pesok.py, import the add variable from pesok2.py, then display it, but import runs the entire pesok2.py file and before add, it also outputs zxc, respectively.

How do I properly import the variable so that pesok.py only pulls the value of the add variable from pesok2.py?

Answer 1

The "correct" approach is:
pesok2.py

add = 2

if __name__ == "__main__":
    zxc = 1234567890
    print(zxc)

What is under the condition is not executed when imported, but when executed directly pesok2.py
ps remember: "pesok - plohaya zamena ovsu" (c) O'Henry