[英]Using derived class (C++) by Python BOOST
我有要在Python中使用的C ++類:
#include "ExtraClass.h"
class CApp
{
...
ExtraClass Bar; //there is function Foo()
}
BOOST_PYTHON_MODULE( CApp )
{
class_<ExtraClass>("ExtraClass",init<>())
.def("Foo",&ExtraClass::Foo)
;
class_<CApp>("CApp", init<>())
.def_readonly("Bar", &CApp::Bar)
;
編譯正常。 所以我有CApp.so文件要導入到Python中。 因此問題開始於Python:
from CApp import *
class pyApp(CApp):
def __init__(self):
print "<--INIT-->"
CApp = CApp()
pyApp = pyApp()
print CApp.Bar.Foo()
print pyApp.Bar.Foo()
輸出:
<--INIT-->
FOO // <- this is from CApp.Bar.Foo()
Traceback (most recent call last):
File "./pytest.py", line 16, in <module>
print pyApp.Bar.Foo()
Boost.Python.ArgumentError:
Python argument types in None.None(pyApp)
did not match C++ signature: None(CApp {lvalue})
如果在派生類中實現init (),則需要確保調用基本init (),否則它將沒有基本成員。
from CApp import *
class pyApp(CApp):
def __init__(self):
CApp.__init__(self)
print "<--INIT-->"
CApp = CApp()
pyApp = pyApp()
print CApp.Bar.Foo()
print pyApp.Bar.Foo()
我遇到了同樣的問題,並在這里找到了解決方案-https: //stackoverflow.com/a/6396839 。
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