好吧,也许我找不到答案,因为我不确定如何表达,但我有一个名为 Info 的类和另一个名为 Packet 的类,它们都使用 boost 编译成 Python 扩展,我想返回一个指向 Packet 模块中的 Info 对象的指针。信息.cpp#include "info.h"Info::Info(int i_, int j_){ this->i = i_; this->j = j_;} Info::~Info(){}BOOST_PYTHON_MODULE(Info){ class_<Info>("Info", init<int, int>()) .def_readwrite("i", &Info::i) .def_readwrite("j", &Info::j);}数据包.cpp:Packet::Packet(int i_, int j_, PyObject* addr_, bool a_, bool b_){ this->i = i_; this->j - j_; this->addr = addr_; this->a = a_; this->b = b_;}// some other functionsInfo* Packet::test(){ return new Info(1,2);}BOOST_PYTHON_MODULE(Packet){ class_<Packet>("Packet", init<int, int, PyObject*, bool, bool>()) /*some other functions*/ .def("test", &Packet::test, return_value_policy<reference_existing_object>());}testPacket.py:from Packet import *# this works correctlyp = Packet(1,2, None, False, False)# this crashest = p.test()错误信息:Traceback (most recent call last): File "/usr/lib64/python3.6/runpy.py", line 193, in _run_module_as_main "__main__", mod_spec) File "/usr/lib64/python3.6/runpy.py", line 85, in _run_code exec(code, run_globals) File "/tmp/lirui/testPacket.py", line 5, in <module> print(p.test())TypeError: No Python class registered for C++ class Info有什么方法可以返回指向 Info 对象的指针吗?
1 回答
撒科打诨
TA贡献1934条经验 获得超2个赞
您只导入了Packet
.
您还需要导入Info
.
否则,如错误所述,Python 在尝试使用它时无法识别它p.test()
(或者更具体地说,返回指向它的指针,分配给t
)。
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