void ModifierWidgetPythonScript::openScript(QString fileName)
{
    QFileInfo fileInfo(fileName);

    /*
     * Equivalent to:
     *  import sys
     *  del sys.modules['module']
     */
    if(py_->module)
    {
        PyObject* modules = PyImport_GetModuleDict();
        PyDict_DelItem(modules, PyUnicode_FromString(PyModule_GetName(py_->module)));
    }

    // Release references to previous module + callback functions
    py_->flushFunction.reset();
    py_->applyFunction.reset();
    py_->module.reset();

    /*
     * Need to first change the path to the directory where the script lies, by
     * adding the path to the script to sys.path. The following checks if the
     * path already exists in sys.path, and adds it if it doesnt.
     */
    std::wstring pathToAdd = fileInfo.absolutePath().toStdWString();
    PyObject* pySysPath = PySys_GetObject("path");
    PythonObject<> pyPathToAdd = PyUnicode_FromWideChar(pathToAdd.c_str(), wcslen(pathToAdd.c_str()));
    int pyLen = PyList_Size(pySysPath);
    for(int i = 0; i != pyLen; ++i)
    {
        PyObject* item = PyList_GET_ITEM(pySysPath, i);
        if(PyUnicode_Compare(item, pyPathToAdd) == 0)
            goto path_already_added;
    }
    PyList_Append(pySysPath, pyPathToAdd.steal());
    path_already_added:

    PythonObject<> scriptFile = PyUnicode_DecodeFSDefault(fileInfo.fileName().replace(".py", "").toUtf8().data());
    if(scriptFile == NULL)
    {
        defaultLogger.logError("Failed to load python script %s, file name to unicode conversion failed.", fileName.toLatin1().data());
        return;
    }
    py_->module = PyImport_Import(scriptFile);
    if(py_->module == NULL)
    {
        PythonInterpreter_logError(QString("Failed to import script " + fileName).toLatin1().data());
        return;
    }

    // other stuff
}