score = float(input("Enter Score: "))
message = "Score out of range"
if score >= 0.9:
message = "A"
elif score >= 0.8:
message = "B"
elif score >= 0.7:
message = "C"
elif score >= 0.6:
message = "D"
elif score < 0.6:
message = "F"
else:
message = "Out of Range"
print(message)
I hope this helps!