acess class attribute in another file

Question

I\'m new to python.

I have a question about accessing attribute in class

t1.py

#!/usr/bin/python
import t2

class A:
        flag = False

if __n         


        

Answer 1

When you do

./t1.py

you're executing the t1.py file, but it's not executed as the t1 module. It's considered to be the __main__ module. (This is what that if __name__ == '__main__' line checks for.) That means that when this line:

import t1

in t2.py tries to import t1, Python starts executing the t1.py file again to create the t1 module. You end up with two versions of the A class, one being __main__.A and one being t1.A. The modification to t1.A doesn't do anything to __main__.A, because even though they came from the same code in the same file, they're not the same class.