auto save

diy.py

+dict={"可口可乐":3,"旺仔牛奶":4,"农夫山泉":1,"辣条":3}
+k=input("你想买")
+if k in dict:
+    print("您购买的"+k+"须要"+str(dict[k])+"元")
+else:   
+    print("无该商品")
+
+
+