发生异常: ModuleNotFoundError       (note: full exception trace is shown but execution is paused at: _run_module_as_main)
No module named 'ultralytics.utils'
  File "D:\YOLO\yolov8\YOLOv8-main\YOLOv8-main\ultralytics\nn\modules.py", line 11, in <module>
    from ultralytics.utils.tal import dist2bbox, make_anchors
  File "D:\YOLO\yolov8\YOLOv8-main\YOLOv8-main\ultralytics\nn\tasks.py", line 10, in <module>
    from ultralytics.nn.modules import (C1, C2, C3, C3TR, SPP, SPPF, Bottleneck, BottleneckCSP, C2f, C3Ghost, C3x, Classify,
  File "D:\YOLO\yolov8\YOLOv8-main\YOLOv8-main\ultralytics\yolo\v8\classify\train.py", line 6, in <module>
    from ultralytics.nn.tasks import ClassificationModel, attempt_load_one_weight
  File "D:\YOLO\yolov8\YOLOv8-main\YOLOv8-main\ultralytics\yolo\v8\classify\__init__.py", line 4, in <module>
    from ultralytics.yolo.v8.classify.train import ClassificationTrainer, train
  File "D:\YOLO\yolov8\YOLOv8-main\YOLOv8-main\ultralytics\yolo\v8\__init__.py", line 3, in <module>
    from ultralytics.yolo.v8 import classify, detect, segment
  File "D:\YOLO\yolov8\YOLOv8-main\YOLOv8-main\ultralytics\yolo\__init__.py", line 3, in <module>
    from . import v8
  File "D:\YOLO\yolov8\YOLOv8-main\YOLOv8-main\ultralytics\__init__.py", line 5, in <module>
    from ultralytics.yolo.engine.model import YOLO
  File "D:\YOLO\yolov8\YOLOv8-main\YOLOv8-main\train.py", line 1, in <module>
    from ultralytics import YOLO
  File "D:\anaconda\envs\YOLOV8\Lib\runpy.py", line 87, in _run_code
    exec(code, run_globals)
  File "D:\anaconda\envs\YOLOV8\Lib\runpy.py", line 194, in _run_module_as_main (Current frame)
    return _run_code(code, main_globals, None,
ModuleNotFoundError: No module named 'ultralytics.utils'

检查 Ultralytics 版本

python -c "import ultralytics; print(f'Ultralytics版本: {ultralytics.__version__}')"

排除了版本问题之后，发现是因为YOLOV8文件夹中存在ultralytics文件夹导致的，

重命名本地 ultralytics 目录：
将项目中的 ultralytics 文件夹临时重命名为 ultralytics_bak，避免与库冲突；这里路径换成你自己的YOLO或者别的什么含ultralytics文件夹的路径：

cd D:\YOLO\yolov8\YOLOv8-main\YOLOv8-main
ren ultralytics ultralytics_bak

可以清理本地代码干扰