Could anyone explain this solution

Question

https://imgur.com/a/AApuq53

Answer 1

It’s a python generator. Typically, you’ll save the generator in a variable, and then call next() on it.

Example: https://code.sololearn.com/c5xagCLt2OYB/?ref=app

More on Python Generators: https://www.geeksforgeeks.org/generators-in-python/