Ultralytics Code Refactor https://ultralytics.com/actions (#13153)

* Refactor code for speed and clarity

* Update dataloaders.py

Signed-off-by: Glenn Jocher <glenn.jocher@ultralytics.com>

---------

Signed-off-by: Glenn Jocher <glenn.jocher@ultralytics.com>

segment/predict.py

@@ -97,6 +97,7 @@ def run(
     vid_stride=1,  # video frame-rate stride
     retina_masks=False,
 ):
+    """Run YOLOv5 segmentation inference on diverse sources including images, videos, directories, and streams."""
     source = str(source)
     save_img = not nosave and not source.endswith(".txt")  # save inference images
     is_file = Path(source).suffix[1:] in (IMG_FORMATS + VID_FORMATS)

segment/val.py

@@ -184,6 +184,9 @@ def run(
     compute_loss=None,
     callbacks=Callbacks(),
 ):
+    """Validates a YOLOv5 segmentation model on specified dataset, producing metrics, plots, and optional JSON
+    output.
+    """
     if save_json:
         check_requirements("pycocotools>=2.0.6")
         process = process_mask_native  # more accurate