Python中如何通过一个JSON中个数据更新另外一个JSON？

Question

有一个JSON数据保存在本地(约2000条数据)，程序运行后会去服务器加载一个最近更新的JSON数据列表(30条，但这里可能会含有本地中已经有的数据)，怎么样才可以比较高效的更新本地的JSON数据为最新？

Answer 1

Because I don’t know the form of your data, I can only say - list storage is a linear time update, saving space and time: If it is a dictionary key-value的形式是O(1)complexity update. Trade space for time.

Answer 2

If it is in k-v format, you can convert it to dict first, and then update

old = {"a":1,"b":2}
new = {"a":2,"c":3}
old.update(new)
# old={"a":2,"b":2,"c":3}