It is easy to model building in energyplus with the help of ladybug and honeybee, and it is easy to model cooling coil and other kind of end equipments. and, energyplus now can work with python in Library and Plugin mode, but energyplus is not easy to use when we want to simulate chiller plant and other kind of plants. Trnsys is easy to simulate plant, and trnsys is also work well with python. If there are some method to combine trnsys with energyplus through python? Hope someone can give some tips.