pip (package manager)

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Pip help.png
An output of pip --help
Stable release 7.1.0[1] / June 30, 2015; 2 months ago (2015-06-30)
Written in Python
Operating system OS-independent
Platform Python
Type Package management system
License Free software[2]
Website www.pip-installer.org

pip is a package management system used to install and manage software packages written in Python. Many packages can be found in the Python Package Index (PyPI).[3]

Python 2.7.9 and later (on the python2 series), and Python 3.4 and later include pip (pip3 for Python 3) by default.[4]

pip is a recursive acronym that can stand for either "Pip Installs Packages" or "Pip Installs Python".[5][6]

Command-line interface[edit]

An output of pip install virtualenv

One major advantage of pip is the ease of its command-line interface, which makes installing Python software packages as easy as issuing one command:

pip install some-package-name

Users can also easily implement the package's subsequent removal:

pip uninstall some-package-name

Most importantly pip has a feature to manage full lists of packages and corresponding version numbers, possible through a "requirements" file.[3] This permits the efficient re-creation of an entire group of packages in a separate environment (e.g. another computer) or virtual environment. This can be achieved with a properly formatted requirements.txt file and the following command:

pip install -r requirements.txt

Install some package for a specific version python, where ${version} is replaced for 2, 3, 3.4, etc:

pip${version} install some-package-name

Web hosting service use[edit]

Pip is used to support the use of Python in cloud web hosting, such as by Heroku.[7]

See also[edit]


  1. ^ "Release Notes". 
  2. ^ "LICENSE.txt". github.com/pypa/pip. Retrieved 25 July 2015. 
  3. ^ a b "pip documentation". The pip developers. Retrieved 5 January 2012. 
  4. ^ "pip installation". Retrieved 24 Feb 2015. 
  5. ^ "pip - ubuntuusers.de". ubuntuusers.de. Retrieved 17 February 2015. 
  6. ^ "What Does PIP Stand For?". Stack Exchange. Retrieved 17 February 2015. 
  7. ^ "Getting Started with Python on Heroku/Cedar". Dev Center. Heroku. Retrieved 5 January 2012. 

External links[edit]

Official website