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.. _`Installation`:

Installation
============

Python & OS Support
-------------------

pip works with CPython versions 2.6, 2.7, 3.1, 3.2, 3.3, 3.4 and also pypy.

pip works on Unix/Linux, OS X, and Windows.

.. note::

  Python 2.5 was supported through v1.3.1, and Python 2.4 was supported through v1.1.


.. _`get-pip`:

Install pip
-----------

To install or upgrade pip, securely download `get-pip.py
<https://bootstrap.pypa.io/get-pip.py>`_. [1]_

Then run the following (which may require administrator access)::

 python get-pip.py

If `setuptools`_ (or `distribute`_) is not already installed, ``get-pip.py`` will
install `setuptools`_ for you. [2]_

To upgrade an existing `setuptools`_ (or `distribute`_), run ``pip install -U setuptools`` [3]_


Upgrade pip
-----------

On Linux or OS X:

::

 pip install -U pip


On Windows [4]_:

::

 python -m pip install -U pip



Using Package Managers
----------------------

On Linux, pip will generally be available for the system install of python using
the system package manager, although often the latest version will be
unavailable.

On Debian and Ubuntu::

   sudo apt-get install python-pip

On Fedora::

   sudo yum install python-pip


----

.. [1] "Secure" in this context means using a modern browser or a
       tool like `curl` that verifies SSL certificates when downloading from
       https URLs.

.. [2] Beginning with pip v1.5.1, ``get-pip.py`` stopped requiring setuptools to
       be installed first.

.. [3] Although using ``pip install --upgrade setuptools`` to upgrade from
       distribute to setuptools works in isolation, it's possible to get
       "ImportError: No module named setuptools" when using pip<1.4 to upgrade a
       package that depends on setuptools or distribute. See :doc:`here for
       details <distribute_setuptools>`.

.. [4] https://github.com/pypa/pip/issues/1299

.. _setuptools: https://pypi.python.org/pypi/setuptools
.. _distribute: https://pypi.python.org/pypi/distribute
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