save project

er.py

 food={"香蕉":3,"西瓜":5}
 food={"香蕉":3,"西瓜":5}
-k=input("写出水果名")
-p=input("写出水果价格")
-if k in food:
-    if int(p)<food[k]:
-        food[k]=int(p)
+while True:
+    k=input("写出水果名")
+    p=input("写出水果价格")
+    if k in food:
+        if int(p)<food[k]:
+            food[k]=int(p)
+        else:
+            print("比之前便宜")
     else:
     else:
-        print("比之前便宜")
-else:
-    food[k]=int(p)
-    print("添加成功")
+        food[k]=int(p)
+        print("添加成功")