确保python版本>3.10
python -m venv yolo26 #创建虚拟环境，目录名为yolo26
激活
source yolo26/bin/activate
1 安装pytorch
python -m pip install --upgrade pip #升级pip
pip install torch torchvision torchaudio --index-url https://download.pytorch.org/whl/cu121
pip install torch torchvision torchaudio --index-url https://download.pytorch.org/whl/cpu(无n卡)
2 安装yolo26
pip install ultralytics
3 验证
python -c "import torch; from ultralytics import YOLO; print('CUDA可用:', torch.cuda.is_available()); model = YOLO('yolo26n.pt'); print('✅ YOLO26环境搭建成功！')"