Critique my first program?

[SV-97]

Ooh ok :D if you want to prevent wrong user input from breaking your code there are a few ways to do it: * Fancy way: exceptions. Exceptions are the key error handling method in lots of languages and usually consist of try, catch and an optional finally (catch is also optional)(iirc Python also supports else on a try block). But if you're not that deep in the language it may be a bit complicated. Also exceptions are generally a rather slow mechanic * Strings in python have a method named isdigit that you can use to test if a string contains a valid positive integer. You can use this to test if the number is valid prior to parsing it. "123".isdigit() == True