3-3

#! /usr/bin/env python3.2
# -*- coding: utf-8 -*-

# main.py
""" Task: Exercise 3.3
    Write a program to prompt for a score between 0.0 and 1.0. If the score is
    out of range print an error. If the score is between 0.0 and 1.0, print a
    grade using the following table:
    Score Grade
    >= 0.9 A
    >= 0.8 B
    >= 0.7 C
    >= 0.6 D
    < 0.6 F
    Enter score: 0.95
    A
    Enter score: perfect
    Bad score
    Enter score: 10.0
    Bad score
    Enter score: 0.75
    C
    Enter score: 0.5
    F
    Run the program repeatedly as shown above to test the various different
    values for input.
"""

# Main

try:
    score = float(input("Enter score: "))
    if score < 0.0 or score > 1.0:
        raise 1         # simulates an error
    elif score >= 0.9:
        print("A")
    elif score >= 0.8:
        print("B")
    elif score >= 0.7:
        print("C")
    elif score >= 0.6:
        print("D")
    elif score >= 0:
        print("F")
    else:
        raise 1         # simulates an error
except:
    print("Bad score")