.. blogpost::
    :title: cppyy: a new module for to C++ in python
    :keywords: C++, cppyy, clang, cling
    :date: 2019-09-25
    :categories: C++

    I did not try but the approach seems interesting
    and less verbose than any others.
    `cppyy <https://cppyy.readthedocs.io/en/latest/index.html>`_
    uses `cling <https://root.cern.ch/cling>`_ to extend
    Python code with C++ code during the execution.
    The `tutorial
    <https://bitbucket.org/wlav/cppyy/src/master/doc/tutorial/CppyyTutorial.ipynb
    ?viewer=nbviewer&fileviewer=notebook-viewer%3Anbviewer>`_
    contains the following example:

    ::

        >>> import cppyy
        >>> cppyy.cppdef("""
        ... class MyClass {
        ... public:
        ...     MyClass(int i) : m_data(i) {}
        ...     virtual ~MyClass() {}
        ...     virtual int add_int(int i) { return m_data + i; }
        ...     int m_data;
        ... };""")
        True
        >>> from cppyy.gbl import MyClass
        >>> m = MyClass(42)
        >>> cppyy.cppdef("""
        ... void say_hello(MyClass* m) {
        ...     std::cout << "Hello, the number is: " << m->m_data << std::endl;
        ... }""")
        True
        >>> MyClass.say_hello = cppyy.gbl.say_hello
        >>> m.say_hello()
        Hello, the number is: 42
        >>> m.m_data = 13
        >>> m.say_hello()
        Hello, the number is: 13