Homework on conditional execution

[Philippa]

Please how do i make my computation stay in the range between 0.0 and 1.0

score = input('Enter a score: ')
if float(score) > 1.0
    print('Bad score')
if float(score) >= 0.9:
    print('A')
elif float(score) >= 0.8:
    print('B')
elif float(score) >= 0.7:
    print('C')
elif float(score) >= 0.6:
    print("D")
elif float(score) < 0.6:
    print('F')
elif float(score) < 0.0
    print('bad score')
else:
    print('Bad score')