newbie: need example (call python from c++)
Hello, I use call<void>(pyFunc,arg1,..) to call a python function with standard double, int etc. What must I do to call a function with a c++ object as argument? psydocode: class MyAnimal { /*...*/ std::string __strName; public: MyAnimal() : __strName("Tux") {} /*...*/ std::string getName() { return __strName;} void setName(const std::string &strName) { __strName = strName; } }; int main() { /*...*/ MyAnimal* pTux = new Animal; /*do something with pTux*/ /*use a python function with pTux*/ call<void>(pyFunc1, ?pTux? ); /*change attributes pTux in pyFunc2*/ dog = call<MyAnimal>(pyFunc2, ?pTux?); /*if it possible to call by reference?*/ call<void>(pyFunc3, ?pTux?); pTux->getName();// return Cat } python module: def py_func1(a): print a.getName() def py_func2(a): a.setName('Dog') return a def py_funnc3(a): a.setName('Cat') ___________________________________________________________ Gesendet von Yahoo! Mail - Jetzt mit 100MB Speicher kostenlos - Hier anmelden: http://mail.yahoo.de
Peter Piehler
Hello,
I use call<void>(pyFunc,arg1,..) to call a python function with standard double, int etc.
Please bring Boost.Python questions to the C++-sig: http://www.boost.org/more/mailing_lists/cplussig
What must I do to call a function with a c++ object as argument?
A standard double is a c++ object. I presume you mean an instance of a C++ class. Just pass it to call and make sure its class has been wrapped.
psydocode:
class MyAnimal { /*...*/ std::string __strName; public: MyAnimal() : __strName("Tux") {} /*...*/ std::string getName() { return __strName;} void setName(const std::string &strName) { __strName = strName; } };
int main() { /*...*/ MyAnimal* pTux = new Animal; /*do something with pTux*/
/*use a python function with pTux*/ call<void>(pyFunc1, ?pTux? );
You can pass pTux or *pTux; that will cuase *pTux to be copied into a Python object. You can pass ptr(pTux) or ref(*pTux); that will pass a Python object that only holds *pTux by reference (no lifetime management)
/*change attributes pTux in pyFunc2*/ dog = call<MyAnimal>(pyFunc2, ?pTux?);
/*if it possible to call by reference?*/ call<void>(pyFunc3, ?pTux?); pTux->getName();// return Cat
-- Dave Abrahams Boost Consulting http://www.boost-consulting.com
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David Abrahams -
Peter Piehler