Python imports across modules and global variables

Question

I have a question which seems to be rather fundamental but I can\'t seem to find any help on this anywhere.

file_a.py >>

from xyz import XYZ
class A:
         


        

Answer 1

import file_a
from file_a import A

I think the problem is: you do not import XYZ really!

from fila_a import * 

can solve your problem,but it is not a good way~~~

you can write this in file_b:

from file_a import XYZ

It is done?