How to pass a callback function from Pascal as a parameter to a Python function?

[heimo88]

Hi,
I have tried several approaches to pass a Delphi callback function to be used by Python, but the functions are not being called.
`
procedure CallbackFunc(args: Variant);
begin
Form1.Memo1.Lines.add('111');
// ...
end;

callback:=PythonEngine1.PyCFunction_NewEx(@CallbackFunc, nil,nil);
PythonEngine1.Py_INCREF(callback);

//client.subscribe_whole_quote(NewPythonDict,TVarProc(cb));
//codelist := VarPythonCreate(['SZ']);
codelist := PythonEngine1.PyList_New(1);
PythonEngine1.PyList_SetItem(codelist, 0, PythonEngine1.PyUnicode_FromString('110072.SH'));

argsTuple := PythonEngine1.PyTuple_New(2);
PythonEngine1.PyTuple_SetItem(argsTuple, 0, codelist);
PythonEngine1.PyTuple_SetItem(argsTuple, 1, callback);
ss :=GetPythonEngine.EvalPyFunction(ExtractPythonObjectFrom( client.subscribe_whole_quote ), argsTuple); `

in the code subscribe_whole_quote is a python function have 2 parms, 1st is a list, and 2d is the callback function, when I called the subscribe_whole_quote it returned success, but never call the callback function.

[heimo88]

the subscribe_whole_quote is in a pyd file. client := Import('pythonclient.pyd');