Grabbing a value from one python script into another

[snippsat]

# Accelerator.py
revs_pc = 999
if __name__ == '__main__':
    print(f"Revs = {revs_pc}")

# bar.py
import Accelerator
import math

def foo(arg):
    value = math.factorial(arg) + Accelerator.revs_pc
    return value

if __name__ == '__main__':
    print(foo(10))

Output:
3629799

So it's a good practice to use if __name__ == '__main__',then dos code after that do not execute when import it.
Have to call Accelerator.revs_pc to get 999.
Also look that i use f-string to avoid the not so nice way print("Revs = " + str(int(revsPC))).