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This article is to share with you about the Python embedded in C++ class member attributes of the example analysis, the editor thinks it is very practical, so share with you to learn, I hope you can get something after reading this article, say no more, follow the editor to have a look.

In C++, relevant members of a class can use keywords to declare different properties. In Python, however, it depends on how the relevant properties of the class are named.

Embed Python into the member attribute of a class in C++

In C++, relevant members of a class can use keywords to declare different properties. In Python, however, it depends on how the relevant properties of the class are named. Using Boost.Python, you can pass properties of class members in its C++ to Python. The code shown below uses Boost.Python to handle the properties of class members. Change the code in BOOST_PYTHON_MODULE to look like this.

BOOST_PYTHON_MODULE (Message) {class_ ("Message", init ()) .def ("set", & Message::set) .def ("get", & Message::get) .def _ readwrite ("msg", & Message::msg);;}

Here, make the member msg in the Message class read-write, and you can also set it as a read-only property using ".def _ readonly". For private members of a class, you can also use ".add _ property" to set its action function to a property in the Python class. The following code uses ".add _ property" to operate on private members.

BOOST_PYTHON_MODULE (Message) {class_ ("Message", init ()) .add _ property ("msg", & Message::get,&Message::set);}

The following code uses the compiled Message module in Python.

> import Message > s = Message.Message ('hi') > s.msg' hi' > s.msg = 'boot' > s.msg' boot'

4. Inheritance of classes

The inheritance of classes in C++ can also be reflected in the Python module through Boost.Python. The following code imports the parent and subclasses into the Python module, respectively. The following are the member attributes of the class embedded in C++ for Python

# include # include # include using namespace boost::python; # pragma comment (lib, "boost_python.lib") class Message {public: std::string msg; Message (std::string m) {mmsg = m;} void set (std::string m) {mmsg = m;} std::string get () {return msg;}}; class Msg:public Message {public: int count Msg (std::string m): Message (m) {} void setcount (int n) {count = n;} int getcount () {return count;}}; BOOST_PYTHON_MODULE (Message) {class_ ("Message", init ()) .add _ property ("msg", & Message::get,&Message::set) Class_ ("Msg", init ()) .def ("setcount", & Msg::setcount) .def ("getcount", & Msg::getcount); the above is the example analysis of embedding Python into the member attributes of classes in C++. The editor believes that there are some knowledge points that we may see or use in our daily work. I hope you can learn more from this article. For more details, please follow the industry information channel.

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