I'm learning PYTHON now, and i see the raising exception, where can i use it?

Answer 1

Which exception?

Please link your code.

Exceptions will be explained in the Python course.

Answer 2

Raising exceptions are useful if you want your program to behave differently when encountering an error during execution, in my opinion.
Or when your program has to handle user input and you want to clarify the error message for the average user.