grade def

grade

def grade(score1, score2):
average_score = (score1 + score2) / 2
return average_score

def level(score):
if score >= 60:
print("合格！")
else:
print("未达标！")

def compare(last_score, now_score):
result = ""
if last_score < now_score:
result = "有进步!"
elif last_score > now_score:
result = "尚需努力!"
else:
result = "继续持平!"
return result

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使用grade(60, 70)在jupyter中调用，虽然函数里面没有print，但是仍然会输出结果，
使用赋值average = grade(60, 70)就不会有输出了。