Jinja2-2.10 MarkupSafe-1.1.1 Werkzeug-0.14.1 click-7.0 itsdangerous-1.1.0 have been installed when installing flask==1.0.2 Following is what you need for this book: This book is designed for computer ...

$ sudo apt-get install build-essential cmake git pkg-config The pkg-config is likely already installed, but be sure to include it just in case. We’ll be using git to pull down the OpenCV repositories ...

显示 4.1.0,代表安装成功，安装的是4.1.0版本。 到此python版本的opencv安装就完成了，怎么样是不是很简单，安装配置过C++版本的小伙伴应该深有体会!