@facelessuser, thank you for your comment. I didn't think about like that. There are two reasons for putting pyc modules. First, I didn't decide to make it free or paid. But I'm not ready to make paid system. Later, compiled modules can be open. Second, I'm not a python specialist. When I make every new plugin, I'm trying to test something new, new syntax, new idea,.. My all other previous plugins are open source. At this time, I wanted to test a plugin including pyc modules like SVN. That experience will help me to make another plugin for future. @kingkeith, as facelessuser said @Clams, I'm a favorite your SystemVerilog user.