std:：从C+；派生的具体Python类的共享ptr+；使用boost:：python抽象类 我正在处理的C++库中的重要功能依赖于代码：ST:：SyrdYPPTR < /C>。例如，要向参与者添加组件，我将使用prototype调用函数 Actor::add_component(std::shared_ptr<Component> cmp);

我希望创建自定义组件，如下所示：

import library

class Derived(library.Base):
    def custom_behavior(self):
        print "Derived::custom_behavior()"


def main():

    # Instance of a Python class derived from a C++ class.
    derived = Derived()

    print "direct call to Derived.behavior..."
    derived.behavior()

    print "call foo(const Base& item)"
    library.foo(derived)

    print "call bar(const Base* const item)"
    library.bar(derived)

    print "call baz(const std::shared_ptr<Base>& item)"
    library.baz(derived)


if __name__ == "__main__":
    main()

我试图重写从

library.Base

派生的所有Python类的构造函数，希望以

std:：shared\u ptr

的形式“开始存在”：

std:：shared_ptr构造函数（）{
返回std:：make_shared（）；
}
阶级_
（“基本”，无初始）
.def（“\uuuu init\uuuuu”，make\u构造函数（构造函数））
//…其他方法
;

但这并没有奏效---有什么建议吗

import library

class Derived(library.Base):
    def custom_behavior(self):
        print "Derived::custom_behavior()"


def main():

    # Instance of a Python class derived from a C++ class.
    derived = Derived()

    print "direct call to Derived.behavior..."
    derived.behavior()

    print "call foo(const Base& item)"
    library.foo(derived)

    print "call bar(const Base* const item)"
    library.bar(derived)

    print "call baz(const std::shared_ptr<Base>& item)"
    library.baz(derived)


if __name__ == "__main__":
    main()

$ python test-library.py
direct call to Derived.behavior...
Derived::custom_behavior()
call foo(const Base& item)
Derived::custom_behavior()
call bar(const Base* const item)
Derived::custom_behavior()
call baz(const std::shared_ptr<Base>& item)
Traceback (most recent call last):
  File "test-library.py", line 27, in <module>
    main()
  File "test-library.py", line 23, in main
    library.baz(derived)
Boost.Python.ArgumentError: Python argument types in
    library.baz(Derived)
did not match C++ signature:
    baz(std::shared_ptr<Base>)

std::shared_ptr<BaseWrapper> constructor() {
    return std::make_shared<BaseWrapper>();
}

class_<BaseWrapper, std::shared_ptr<BaseWrapper>, noncopyable>
    ("Base", no_init")
    .def("__init__", make_constructor(constructor))
    // ... other methods
    ;