How to analyze the deep and shallow copy of PYTHON from the perspective of C++

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Seeing a deep and shallow copy of the list of python today, I can't help comparing it with C\ C++ as follows:

In fact, the deep COPY and the shallow COPY in python are the same as those in C\ C++. After all, the bottom layer of python is made by Cpicket +, and this aspect is retained.

C\ C++ principle, for the class or structure copy constructor equal sign (=) operator to retain the shallow COPY, of course, we can customize

These functions. Let's start with C++ 's simple example of the copy constructor equal sign (=) operator.

# include#include # include using namespace std;class testcy {private: char* a; unsigned int b; public: testcy (const char* inc) {a = new char [strlen (inc) + 1]; strcpy (aQuininc); b = 1 } testcy () {a = NULL; b = 0;} testcy (const testcy & in) / / shallow copy constructor {this- > a = in.a This- > b = in.b;} testcy& operator= (const testcy& in) / / shallow = value operator overload {this- > a = in.a; this- > b = in.b } void print () {cout