Code simulator is coming for Python.
See RobotPySim on
https://github.com/robotpy. Current version is very (very (very)) early and lacks documentation, but will display the output of jaguars in response to the y axis of a joystick. Replace robot.py with your own, set up how to display outputs and receive inputs in robotconfig, and run robotpysim.py. Included test robot drives three motors in response to one joystick Y axis, controlled with w and s. Requires python 3.1.X (the same as the one running on the CRIO) and the correct pygame version for that release.