### venv是python3.3及以后的版本中新增的虚拟环境管理工具包

### 路径

cd /Users/chenliangyu/Desktop/pcacc_files/python_venv

### 激活pytorch_venv

source pytorch_venv/bin/activate

source /Users/chenliangyu/Desktop/pcacc_files/python_venv/pytorch_venv/bin/activate

### 退出pytorch_venv

deactivate

### 安装pytorch环境

pip3 install torch torchvision torchaudio