pip (package manager)

pip
An output of pip --help
Initial release 4 April 2011 (2011-04-04)[1]
Stable release
18.0.0[2] / 22 July 2018 (2018-07-22)
Repository
Edit this at Wikidata
Written in Python
Operating system OS-independent
Platform Python
Type Package management system
License MIT[3]
Website pip.pypa.io

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

Python 2.7.9 and later (on the python2 series), and Python 3.4 and later include pip (pip3 for Python 3) by default.[5]

pip is a recursive acronym for "Pip Installs Packages"[6].

Command-line interface

An output of pip install virtualenv

Most distributions of Python come with pip preinstalled. If pip is missing, it can be installed through the system package manager or by invoking cURL, a client-side data transfer tool:

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

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 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.[4] 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

See also

References

  1. ↑ 1.0 release commit
  2. ↑ "Release Notes".
  3. ↑ "pip/LICENSE.txt". Github. 17 April 2018. Archived from the original on 1 June 2018. Retrieved 1 June 2018.
  4. 1 2 "pip documentation". The pip developers. Retrieved 5 January 2012.
  5. ↑ "pip installation". Retrieved 24 Feb 2015.
  6. ↑ "Oldest version of pip on pypi". Retrieved 28 June 2018.
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