.. Licensed under the Apache License: http://www.apache.org/licenses/LICENSE-2.0
.. For details: https://bitbucket.org/ned/coveragepy/src/default/NOTICE.txt

.. _install:

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

.. :history: 20100725T225600, new for 3.4.
.. :history: 20100820T151500, updated for 3.4b1.
.. :history: 20100906T134800, updated for 3.4b2.
.. :history: 20110604T213400, updated for 3.5b1.
.. :history: 20110629T082400, updated for 3.5.
.. :history: 20110923T081900, updated for 3.5.1.
.. :history: 20120429T162500, updated for 3.5.2b1.
.. :history: 20120503T234000, updated for 3.5.2.
.. :history: 20120929T093600, updated for 3.5.3.
.. :history: 20121117T095000, Now setuptools is a pre-req.
.. :history: 20121128T203000, updated for 3.6b1.
.. :history: 20121223T180800, updated for 3.6b2.
.. :history: 20121229T112400, updated for 3.6b3.
.. :history: 20130105T174400, updated for 3.6.
.. :history: 20131005T210600, updated for 3.7.
.. :history: 20131212T213500, updated for 3.7.1.
.. :history: 20140927T102700, updated for 4.0a1.


.. highlight:: console

.. _coverage_pypi: http://pypi.python.org/pypi/coverage
.. _setuptools: http://pypi.python.org/pypi/setuptools
.. _Distribute: http://packages.python.org/distribute/


Installing coverage.py is done in the usual ways. The simplest way is with
pip::

    $ pip install coverage

.. ifconfig:: prerelease

    To install a pre-release version, you will need to specify ``--pre``::

        $ pip install --pre coverage


The alternate old-school technique is:

#.  Install (or already have installed) `setuptools`_ or `Distribute`_.

#.  Download the appropriate kit from the
    `coverage.py page on the Python Package Index`__.

#.  Run ``python setup.py install``.

.. __: coverage_pypi_


Installing dependencies
-----------------------

Coverage.py includes a C extension for speed. It is strongly recommended to use
this extension: it is much faster, and is needed to support a number of
coverage.py features.  You may need to install the python-dev and gcc support
files before installing coverage via pip.  The exact commands depend on which
package manager you use on your operating system, which Python version you are
using, and on the names of the packages for your distribution.  For example::

    $ sudo apt-get install python-dev gcc
    $ sudo yum install python-devel gcc

    $ sudo apt-get install python3-dev gcc
    $ sudo yum install python3-devel gcc


Installing on Windows
---------------------

For Windows, kits are provided on the `PyPI page`__ for different versions of
Python and different CPU architectures. These kits require that `setuptools`_
be installed as a pre-requisite, but otherwise are self-contained.  They have
the C extension pre-compiled so there's no need to worry about compilers.

.. __: coverage_pypi_


Checking the installation
-------------------------

If all went well, you should be able to open a command prompt, and see
coverage.py installed properly:

.. ifconfig:: not prerelease

    .. parsed-literal::

        $ coverage --version
        Coverage.py, version |release| with CTracer
        Documentation at https://coverage.readthedocs.org

.. ifconfig:: prerelease

    .. parsed-literal::

        $ coverage --version
        Coverage.py, version |release| with CTracer
        Documentation at https://coverage.readthedocs.org/en/coverage-|release|

You can also invoke coverage.py as a module:

.. ifconfig:: not prerelease

    .. parsed-literal::

        $ python -m coverage --version
        Coverage.py, version |release| with CTracer
        Documentation at https://coverage.readthedocs.org

.. ifconfig:: prerelease

    .. parsed-literal::

        $ python -m coverage --version
        Coverage.py, version |release| with CTracer
        Documentation at https://coverage.readthedocs.org/en/coverage-|release|