根据这篇文章开始上手

http://www.oschina.net/translate/the-flask-mega-tutorial-part-i-hello-world

再加点东西

如果你的环境是 Linux，OS X or Cygwin，使用以下命令安装 flask 和 扩张包，按顺序一个接一个：

flask/bin/pip install flask

flask/bin/pip install flask-login

flask/bin/pip install flask-openid

flask/bin/pip install flask-mail

flask/bin/pip install flask-sqlalchemy

flask/bin/pip install sqlalchemy-migrate

flask/bin/pip install flask-whooshalchemy

flask/bin/pip install flask-wtf

flask/bin/pip install flask-babel

flask/bin/pip install flup

如果你的是 Windows 环境，那么命令有点不同：

flask\Scripts\pip install flask

flask\Scripts\pip install flask-login

flask\Scripts\pip install flask-openid

flask\Scripts\pip install flask-sqlalchemy

flask\Scripts\pip install sqlalchemy-migrate

flask\Scripts\pip install flask-whooshalchemy

flask\Scripts\pip install flask-wtf

flask\Scripts\pip install flask-babel

flask\Scripts\pip install flup