python_求平均值

1.输出字典内数组平均值python a = {'name': 'Tom', 'age': 20, 'address': '北京', 'score': [89, 99, 78, 95]} dic = a.get('score') print(dic) b = 0 for i in dic: b += i c = b / len(dic) #里面字符的长度（也就是

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