mirror of https://github.com/pypa/pip
138 lines
3.9 KiB
ReStructuredText
138 lines
3.9 KiB
ReStructuredText
.. _`Installation`:
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Installation
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============
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Do I need to install pip?
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-------------------------
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pip is already installed if you are using Python 2 >=2.7.9 or Python 3 >=3.4
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downloaded from `python.org <https://www.python.org>`_ or if you are working
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in a :ref:`Virtual Environment <pypug:Creating and using Virtual Environments>`
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created by :ref:`pypug:virtualenv` or :ref:`pyvenv <pypug:venv>`.
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Just make sure to :ref:`upgrade pip <Upgrading pip>`.
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.. _`get-pip`:
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Installing with get-pip.py
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--------------------------
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To install pip, securely download `get-pip.py
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<https://bootstrap.pypa.io/get-pip.py>`_. [1]_::
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curl https://bootstrap.pypa.io/get-pip.py -o get-pip.py
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As when running any script downloaded from the web, ensure that you have
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reviewed the code and are happy that it works as you expect.
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Then run the following::
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python get-pip.py
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.. warning::
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Be cautious if you are using a Python install that is managed by your operating
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system or another package manager. ``get-pip.py`` does not coordinate with
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those tools, and may leave your system in an inconsistent state.
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``get-pip.py`` also installs :ref:`pypug:setuptools` [2]_ and :ref:`pypug:wheel`
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if they are not already. :ref:`pypug:setuptools` is required to install
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:term:`source distributions <pypug:Source Distribution (or "sdist")>`. Both are
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required in order to build a :ref:`Wheel cache` (which improves installation
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speed), although neither are required to install pre-built :term:`wheels
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<pypug:Wheel>`.
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.. note::
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The get-pip.py script is supported on the same python version as pip.
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For the now unsupported Python 2.6, alternate script is available
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`here <https://bootstrap.pypa.io/2.6/get-pip.py>`__.
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get-pip.py options
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~~~~~~~~~~~~~~~~~~~
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.. option:: --no-setuptools
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If set, do not attempt to install :ref:`pypug:setuptools`
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.. option:: --no-wheel
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If set, do not attempt to install :ref:`pypug:wheel`
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``get-pip.py`` allows :ref:`pip install options <pip
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install Options>` and the :ref:`general options <General Options>`. Below are
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some examples:
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Install from local copies of pip and setuptools::
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python get-pip.py --no-index --find-links=/local/copies
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Install to the user site [3]_::
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python get-pip.py --user
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Install behind a proxy::
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python get-pip.py --proxy="http://[user:passwd@]proxy.server:port"
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``get-pip.py`` can also be used to install a specified combination of ``pip``,
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``setuptools``, and ``wheel`` using the same requirements syntax as ``pip``::
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python get-pip.py pip==9.0.2 wheel==0.30.0 setuptools==28.8.0
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Using Linux Package Managers
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----------------------------
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See :ref:`pypug:Installing pip/setuptools/wheel with Linux Package Managers` in
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the `Python Packaging User Guide
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<https://packaging.python.org/en/latest/current/>`_.
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.. _`Upgrading pip`:
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Upgrading pip
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-------------
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On Linux or macOS::
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pip install -U pip
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On Windows [4]_::
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python -m pip install -U pip
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.. _compatibility-requirements:
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Python and OS Compatibility
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---------------------------
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pip works with CPython versions 2.7, 3.4, 3.5, 3.6, 3.7 and also pypy.
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This means pip works on the latest patch version of each of these minor
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versions. Previous patch versions are supported on a best effort approach.
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pip works on Unix/Linux, macOS, and Windows.
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----
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.. [1] "Secure" in this context means using a modern browser or a
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tool like `curl` that verifies SSL certificates when downloading from
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https URLs.
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.. [2] Beginning with pip v1.5.1, ``get-pip.py`` stopped requiring setuptools to
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be installed first.
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.. [3] The pip developers are considering making ``--user`` the default for all
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installs, including ``get-pip.py`` installs of pip, but at this time,
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``--user`` installs for pip itself, should not be considered to be fully
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tested or endorsed. For discussion, see `Issue 1668
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<https://github.com/pypa/pip/issues/1668>`_.
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.. [4] https://github.com/pypa/pip/issues/1299
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