常用PIP命令

pip依赖转移（当然也可以用conda）

pip freeze > requirements.txt

pip install -r requirements.txt

Win10上如果Shapely不能安装可以下载whl包单独安装

pip install Shapely-1.6.4.post2-cp37-cp37m-win_amd64.whl

用阿里镜像安装一些常用包

pip install imgaug -i http://mirrors.aliyun.com/pypi/simple/ --trusted-host mirrors.aliyun.com

pip install torch torchvision -i http://mirrors.aliyun.com/pypi/simple/ --trusted-host mirrors.aliyun.com

pip install six numpy scipy Pillow matplotlib scikit-image opencv-python imageio Shapely  -i http://mirrors.aliyun.com/pypi/simple/ --trusted-host mirrors.aliyun.com