修改字典的键名

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一

info = {"x":1.5 ,"y":2}

info.update({"z":info.pop("x")})

二

info = {"x":1.5 ,"y":2}
info["z"] = info.pop("x")

https://jingyan.baidu.com/article/495ba84149489378b20ede7b.html