save project

diy.py

+jiage={"苹果":8,"香蕉":5,"樱桃":10}
+sg=input("请输入一个水果：")
+jg=input("请输入它的价格：")
+if sg in jiage:
+    if int(jg)<jiage[sg]:
+        jiage[sg]=sg
+        print("降价了，可以购买了。")
+    else:
+        print("涨价了，先不买。")
+else:
+    jiage[sg]=int(jg)
+    print(jiage)
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