auto save

bv.py

-m=('西瓜':909,'葡萄':490,'榴莲':22)
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+m=('西瓜':909,'葡萄':490,'榴莲':22)
+k=input("水果名：")
+v=input("输入"+k+"money")
+    if k in m:
+        if int(v)<m[k]:
+        print("更新了")
+    else:
+        print("涨价了")
+else:
+     m[k]=v
+     print('已提交价格')
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