Best way to make built-in functions available to my module functions?

[Pedroski55]

Recently, there was a question about counting the numbers from a picture of 2 dice. I thought that was interesting, so I fiddled with it.

I import cv2 as cv and numpy as np in the main programme.

I ended up with a few functions of my own for various tasks, so I packed them all in a module called dice_stuff.py, which I import:

import dice_stuff as ds

For example, I have a function:

outline_dice(png_copy, d, np, cv, destination)

which draws a pretty green polyline around each die, once I have the coordinates.

But I found, I had to pass cv and np to the module function ds.outline_dice() because it complained NameError no cv or NameError no np.

I already have cv and np imported in the main part of the programme.

How should I make cv and np available to my module functions?

What is the recommended way to do this? What is "Best Practice"?

[Gribouillis]

How should I make cv and np available to my module functions?

Simply import cv2 as cv and numpy as np in the dice_stuff module.