Importing a library in one file and using it in another file, without importing

Question

There is a file named transforms.py, in it torchvision.transforms is imported and some custom transformations are defined. In another file named main.py, transforms.py is imported.

Now, in order to use torchvision.transforms.Normalize in main.py without importing it, Will it work (Normalize is not used in transforms.py, only imported)? And if it works, what's the reason behind it?

transforms.py:

from torchvision.transforms import *
...
Custom transformations defined
...

main.py

from data import transforms 
...
normalize = transforms.Normalize(mean=[0.5,0.5,0.5],std=[0.1,0.1,0.1])
...