auto save

quiz.py

 # 直接运行以下代码，说说你的发现：
 
 dict_hero = {'赵一':30,'丁二':37,'孙五':52,'王猛':89,'周亮':98}
-dict_hero['老八'] = 250
-if '老八' in dict_hero:
-    print(dict_hero['老八'])
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