Python包管理利器 —— Pip

> curl -O https://bootstrap.pypa.io/get-pip.py
> python get-pip.py

> sudo apt-get install python-pip
> 
or:
> sudo yum install python-pip

> pip install [package-name]

> pip show [package-name]

> pip list --outdated

> pip install [—U | --upgrade] [package-name]

> pip uninstall [package-name]

> pip search [package-name]

> pip list

> pip install [package-name]==0.7.14     # 指定特定安装版本
> 
> pip install [package-name]>=0.7.14     # 指定最小安装版本

> pip freeze > requirements.txt
> 
> pip install -r requirements.txt