【Python】成績等級判斷

score=eval(input("請輸入成績：\n"))
if score>=60:
    grade="D"
elif score>=70:
    grade="C"
elif score>=80:
    grade="B"
elif score>=90:
    grade="A"
else:grade="E"
print("輸入的成績屬於級別{}".format(grade))