3.3

# #!/usr/bin/python
#
# By dvdjaco
# 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
#

prompt = "Enter score: "
try:
    score = float(raw_input(prompt))

    if score < 0.0 or score > 1.0:
        print "Bad score"
    else:
        if score >= 0.9: print "A"
        elif score >= 0.8: print "B"
        elif score >= 0.7: print "C"
        elif score >= 0.6: print "D"
        else: print "F"
except:
    print "Bad score"