E0_copy is not a deep copy. You don't make a deep copy using list() . (Both list(...) and testList[:] are shallow copies.) You use copy.deepcopy(. ... <看更多>

- A deep copy constructs a new compound object and then, recursively,. inserts *copies* into it of the objects found in the original. Two ... ... <看更多>

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三、深拷贝（deep copy）. 所谓“深拷贝”，是指创建一个新的对象，然后递归的拷贝原对象所包含的子对象。深拷贝 ... ... <看更多>