How to call specific Python functions from QT GUI
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@JonB Would you know how should I proceed with my original issue, that is calling specific Python functions. The path I've been trying to down isn't getting me very far. I've been using this so far.
void f_pathloss::on_pb_connect_disconnect_clicked() { PyObject *pName, *pModule, *pDict, *pFunc; PyObject *pArgs, *pValue; Py_Initialize(); pName = PyString_FromString((char*)"test_program"); pModule = PyImport_Import(pName); pFunc = PyObject_GetAttrString(pModule, "test_function"); PyXDECREF(pFunc); pValue = PyObject_CallObject(pFunc, pArgs); }where 'test_function' is in 'test_program'.py. All that test_function does is return a string that simply says "this is a c++ test". I have seen QProcess mentioned, but that seems to mainly work when you want to run the entire script, not just a single function.
For the code I've pasted above, once the user hits the connect_disconnect_clicked() button, I want to call a function.
wrote on 24 Aug 2021, 17:26 last edited by@lfreeman6490
I have never done any of this. You show code, which looks reasonable, but say nothing about what happens when you call it, or step through it in debugger? @mrjj linked to an example, it looks similar. You would benefit from some error checking code here.QProcessis to do with running an external program, or OS command. You can run a whole Python script that way, but I don't think it's what you should be looking at. -
@lfreeman6490
I have never done any of this. You show code, which looks reasonable, but say nothing about what happens when you call it, or step through it in debugger? @mrjj linked to an example, it looks similar. You would benefit from some error checking code here.QProcessis to do with running an external program, or OS command. You can run a whole Python script that way, but I don't think it's what you should be looking at.wrote on 24 Aug 2021, 17:28 last edited by@JonB Well nothing happens when I do it. It builds successfully and launches the GUI, once I click the button nothing happens. There isn't an error thrown at all either. Just wanted to ask and see
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@JonB Well nothing happens when I do it. It builds successfully and launches the GUI, once I click the button nothing happens. There isn't an error thrown at all either. Just wanted to ask and see
wrote on 24 Aug 2021, 17:32 last edited by@lfreeman6490
So start debugging that function! I take it you actually have atest_functionin thetest_program, else what do you expect.Maybe you need the different code in https://sites.northwestern.edu/yihanzhang/2019/08/22/how-to-invoke-python-function-from-c/, I don't know?
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