opencv/sources/modules/video/misc/python/pyopencv_video.hpp

#ifdef HAVE_OPENCV_VIDEO
typedef TrackerMIL::Params TrackerMIL_Params;
typedef TrackerGOTURN::Params TrackerGOTURN_Params;
typedef TrackerDaSiamRPN::Params TrackerDaSiamRPN_Params;
typedef TrackerNano::Params TrackerNano_Params;
#endif