How to save multiple files in a folder?

Question

Python

img = pag.screenshot()
path = os.path.join(r'C:\Users\#\Desktop\Aitvaro bot demo\ScreenshotList', 'test.jpg')
img.save(path)

This code saves a jpg file called test.jpg to a folder, but when the code is run again, nothing is saved to the folder, and there is still one file test.jpg in it.
How to make it so that every time you run the code, a new screenshot with a different name is saved to the folder?