diy.py

scores = {'':89,'':95,'':80}
def get_scores(scores)
    sum_scores = 0
    for subject, score in scores.items():
        sum_score += scores
        print('现在的总分是%d'%sum_score)
    ave_score = sum_scores/len(scores)
    print('平均分是%d'%ave_score)
get_scores(scores)