Homework Help - Simple Grading System

[perfringo]

One way to validate input is write a separate function, something like that:

def validate(request):
    """Return allowed input in range 1-100"""
    allowed = range(1, 101)
    m = (
        (f'Expected integer in range 1 - 100 '
         f'but input was')
        )
    
    while True:
        answer = input(request)
        try:
            answer = int(answer)
            if answer in allowed:
                return answer
        
        except ValueError:
            print(f'{m} {answer}')
            
        else:
            print(f'{m} {answer}')

Then it's just:

score_to_grade(validate('Enter score: '))

and now it is not important how score_to_grade handles out of range values.