auto save

dvojfdi.py

-goods={'可口可乐':3,'旺仔牛奶':4,'农夫山泉':1,'辣条':3,'巴西':2,'果冻':4,'乐事':5,'奥利奥':10,'巧克力':6}}
-goods.pop("农夫山泉")
-print(goods)
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+cost{}
+k=input()
+v=input()
+if k in cost:
+    if float(v)<cost[k]
+    cost[k]=float(v)
+    
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