Ex3

#!/usr/bin/env python3

def getgrade(score):

    if score >= 1:
        return "Bad Score"
    else:
        if score >= 0.9:
                return "A"
        else:
            if score >= 0.8:
                return "B"
            else:
                if score >= 0.7:
                    return "C"
                else:
                    if score >= 0.6:
                        return "D"
                    else:
                        return "Bad Score"


score = float(input('\nWhat is the Score?: '))
print(getgrade(score))