How would i make a custom error message in python

Question

In a python program I am making, I want it to only take integers, and if it gets a string say "There has been an error in the system." instead of murmering sensless information the user will not understand

Answer 1

Use a try-except block to capture the error and use the raise statement to say the error message of your choice:

try:
    a = int(input())
except:
    raise Exception('There has been an error in the system')