ffpython::add_path() file path changed support

[lion117]

issue have been solve . it belong to my python file which could not load files

hi fanchy
ffpython add specified file path by use add_path() or run_string to do this work .
after view the source code : the mechanism to load module in python is :

char buff[1024];
        SAFE_SPRINTF(buff, sizeof(buff), "import sys\nif '%s' not in 
sys.path:\n\tsys.path.append('%s')\n", path_.c_str(), path_.c_str());
        PyRun_SimpleString(buff);

but in the mixed programming , python files maybe located in several directory . once i use the add-path () , it seems the library didnot support to change the specified file path any more .
like following code :

{   ffpython_t  I_pythoner;
    ffpython_t::add_path("./py_file/");
    i_pythoner.call<void>("test_module", "sayhi");      
   # ffpython_t::add_path("./child_dir/");                     
    #i_pythoner.call<void>("test_module2", "sayhi");       # could not  find the module 
}

current directory
----py_file
--------test_module.py
--------child_dir
------------test_module.py

question

could ffpython support multiple - paths module loading ? if it could , what do i supposed to do ?