ultralytics 8.0.33 security updates and fixes (#896)

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

ultralytics/yolo/v8/segment/predict.py

@@ -1,7 +1,5 @@
 # Ultralytics YOLO 🚀, GPL-3.0 license
 
-import sys
-
 import torch
 
 from ultralytics.yolo.engine.results import Results

ultralytics/yolo/v8/segment/train.py

@@ -1,5 +1,4 @@
 # Ultralytics YOLO 🚀, GPL-3.0 license
-import sys
 from copy import copy
 
 import torch

ultralytics/yolo/v8/segment/val.py

@@ -1,7 +1,6 @@
 # Ultralytics YOLO 🚀, GPL-3.0 license
 
 import os
-import sys
 from multiprocessing.pool import ThreadPool
 from pathlib import Path
 
@@ -30,7 +29,7 @@ class SegmentationValidator(DetectionValidator):
 
     def init_metrics(self, model):
         head = model.model[-1] if self.training else model.model.model[-1]
-        val = self.data.get('val', '')  # validation path
+        val = self.data.get(self.args.split, '')  # validation path
         self.is_coco = isinstance(val, str) and val.endswith(f'coco{os.sep}val2017.txt')  # is COCO dataset
         self.class_map = ops.coco80_to_coco91_class() if self.is_coco else list(range(1000))
         self.args.save_json |= self.is_coco and not self.training  # run on final val if training COCO