ultralytics 8.0.39 add ByteTracker and BoT-SORT trackers and fixes (#984)

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

ultralytics/yolo/engine/model.py

@@ -101,6 +101,7 @@ class YOLO:
             self.model, self.ckpt = weights, None
             self.task = guess_model_task(weights)
         self.ckpt_path = weights
+        self.overrides['model'] = weights
         self.ModelClass, self.TrainerClass, self.ValidatorClass, self.PredictorClass = self._assign_ops_from_task()
 
     def _check_is_pytorch_model(self):

ultralytics/yolo/engine/trainer.py

@@ -184,7 +184,7 @@ class BaseTrainer:
             finally:
                 ddp_cleanup(self, file)
         else:
-            self._do_train(int(os.getenv("RANK", -1)), world_size)
+            self._do_train(RANK, world_size)
 
     def _setup_ddp(self, rank, world_size):
         # os.environ['MASTER_ADDR'] = 'localhost'