def get_average_score(a, b, c):
"""
a:课程1的分数,str或者int类型或者float类型
b:课程2的分数,str或者int类型或者float类型
c:课程3的分数,str或者int类型或者float类型
"""
return (float(a)+ float(b) + float(c)) / 3
if __name__ == '__main__':
average_score = get_average_score(79, 80, 97)
print(average_score)