pip (package manager)

pip is a de facto standard package-management system used to install and manage software packages written in Python.[4] Many packages can be found in the default source for packages and their dependencies — Python Package Index (PyPI).[5]

pip
An output of pip --help
Original author(s)Ian Bicking
Initial release4 April 2011 (2011-04-04)[1]
Stable release
20.2 / 29 July 2020 (2020-07-29)[2]
Repository
Written inPython
Operating systemOS-independent
PlatformPython
TypePackage management system
LicenseMIT[3]
Websitepip.pypa.io

Most distributions of Python come with pip preinstalled. Python 2.7.9 and later (on the python2 series), and Python 3.4 and later include pip (pip3 for Python 3) by default.[6]

First introduced as pyinstall in 2008 by Ian Bicking (the creator of the virtualenv package) as an alternative to easy_install,[7][8] pip was chosen as the new name from one of several suggestions that the creator received on his blog post.[9] According to Bicking himself, the name is an acronym for "Pip Installs Packages".[10] In 2011, the Python Packaging Authority (PyPA) was created to take over the maintenance of pip and virtualenv from Bicking, led by Carl Meyer, Brian Rosner, and Jannis Leidel.[8]

Command-line interface
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 a command:

pip install some-package-name

Users can also easily remove the package:

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.[5] 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 file and the following command[11], where requirements.txt is the name of the file:

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
gollark: Someone here made something which meddles with the peripheral API to make it emulate actual modem peripherals, but by default the API is quite different.
gollark: (I found out later that this had in fact been done rather a lot of times before, but mine is unique in having a CC client at least)
gollark: It's entirely centralized because distributed systems are quite hard to do, and basically just works as a websocket pub/sub server.
gollark: It runs over websockets and permits arbitrary CBOR data in message bodies, as well as arbitrary strings/numbers as channel IDs.
gollark: <@!490057841202298900> Hi! I found your thing here (https://forge.touhey.org/cc/thox.git/tree/docs/explain/modem.rst) describing Skynet and thought you might want more information!

See also

References
  1. Release 1.0
  2. "Release Notes". Retrieved 30 July 2020.
  3. "pip/LICENSE.txt". Github. 17 April 2018. Archived from the original on 1 June 2018. Retrieved 1 June 2018.
  4. Kollár, László. "Managing Python packages the right way". Opensource.com. Red Hat. Retrieved 23 June 2019.
  5. "pip documentation". The pip developers. Retrieved 5 January 2012.
  6. "pip installation". Retrieved 24 February 2015.
  7. Bicking, Ian (24 September 2008). "pyinstall: A New Hope". Archived from the original on 27 September 2008. Retrieved 4 March 2020.
  8. "Packaging History". Python Packaging Authority. Retrieved 4 March 2020.
  9. Bicking, Ian (1 October 2008). "pyinstall pybundles". Retrieved 4 March 2020.
  10. Bicking, Ian (28 October 2008). "pyinstall is dead, long live pip!". Retrieved 4 March 2020.
  11. Gahlot, Gaurav (6 November 2018). "Most Important pip Commands for a Python Developer - DZone Open Source". dzone.com. Retrieved 23 June 2019.
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