auto save

store.py

 goods = {'可口可乐':3,'旺仔牛奶':4,'农夫山泉':1,'辣条':3,'巴西烤肉':2,'果冻':4,'乐事':5,'奥利奥':10,'巧克力':6}
-goods.pop("乐事")
-print(goods)
-goods.clear()
-print(goods)
-del goods
-print(goods)
+for i in goods:
+    print(i)items()
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