About [from FILE import FUNC]

[snippsat]

Start to test with a more normal scenario,where you import from a file.
Not like confusing import in both files.

# a2.py
bob = 4
def foo():
    return 42

# a1.py
from a2 import bob, foo

print(f'bob vaule {bob} foo vaule {foo}')

Output:
bob vaule 4 foo vaule <function foo at 0x03F58858>

So using function would be.

from a2 import bob, foo

print(f'vaule bob + foo() is: {bob + foo()}')

Output:
vaule bob + foo() is: 46