For python calls lua, here presents a new method, which ues cle developed by srplab.

A function “Add” is defined in lua which returns the sum of two input integers. The function also calls python method “Show” to print the result.

There are three steps:

1.       Init cle, create service group, and create service.

2.       Create interface object, and defines a new function “Add” of it.

3.       Write function code of Add.

require "libstarcore"

--Step1 : Init cle, create service group, and create service

Service = libstarcore._InitSimple("AddFunctionService","123",0,0);

--Step2 : Create interface object, and define function Add

Obj=Service:_New("TestClass");

--Step3 : Add function code

function Obj:Add(x,y)

  --call back to script function

  self:Show(x+y);

  return x+y;

end

For python code calls the above lua file, there are three steps;

1.       Init cle, create service group,import lua code,  and create service.

2.       Create Instance of object “TestClass” defined in sharelibrary.

3.       Call function “Add”.

import starpy

--Step 1 : Init cle, create service group,import lua file,  and create service.

Service=starpy._InitSimple("test","123",0,0,"AddFunctionService.dll");

--Step 2: Create Instance of object “TestClass” defined in lua.

a = Service.TestClass._New();

--Step 3: call function “Add”

def a_Show(self, Para ) :

    print("print from python call back ", Para )

a.Show = a_Show; 

print("Add returns : ",a.Add(12,34))

Service._ServiceGroup._ClearService()

starpy._ModuleExit()

Run : starapp -e python_call.py?script=python, or

     python python_call.py