auto save

1.py

+cost={'苹果':5.2,'山竹':12.9,'香蕉':2.4,'荔枝':15,'葡萄':9.3,'桂圆':8,'蓝莓':10,'李子':8}
+k=input("水果名称")
+v=input("水果价格")
+if k in cost:
+    if float(v)<cost[k]:
+        cost[k]=float(v)
+        print(+k+"最近价格已更新为"+v+"元")
+    else:
+        print(k+'涨价了，我们不买')
+else:
+    cost[k]=float(v)
+    print("水果"+k+"已上传")
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