pip is python package manger.
https://pip.pypa.io/en/stable/
To install pip, run
wget https://bootstrap.pypa.io/get-pip.py python get-pip.py
On Ubuntu, you can install with
apt install python-pip
On CentOS Server, you can install with
yum -y install python2-pip
Install a package with pip
To install a package with pip, run
pip install PACKAGE-NAME
Example
pip install fabric
Upgrade a package
To upgrade a package, run
pip install -U PACKAGE-NAME
Here we upgrade package paramiko
List all installed packages
pip list
Install requirements for your application
When you build an application in python, that may need multiple modules, you can save these to a file called requirements.txt, to install the modules, run
pip install -r requirements.txt
pip freeze
pip freeze command will list installed modules in format required for requirements.txt
pip freeze