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README.rst

.. image:: https://docs.pytest.org/en/latest/_static/pytest1.png
:target: https://docs.pytest.org/en/latest/
:align: center
:alt: pytest


------

.. image:: https://img.shields.io/pypi/v/pytest.svg
:target: https://pypi.org/project/pytest/

.. image:: https://img.shields.io/conda/vn/conda-forge/pytest.svg
:target: https://anaconda.org/conda-forge/pytest

.. image:: https://img.shields.io/pypi/pyversions/pytest.svg
:target: https://pypi.org/project/pytest/

.. image:: https://codecov.io/gh/pytest-dev/pytest/branch/master/graph/badge.svg
:target: https://codecov.io/gh/pytest-dev/pytest
:alt: Code coverage Status

.. image:: https://travis-ci.org/pytest-dev/pytest.svg?branch=master
:target: https://travis-ci.org/pytest-dev/pytest

.. image:: https://dev.azure.com/pytest-dev/pytest/_apis/build/status/pytest-CI?branchName=master
:target: https://dev.azure.com/pytest-dev/pytest

.. image:: https://img.shields.io/badge/code%20style-black-000000.svg
:target: https://github.com/python/black

.. image:: https://www.codetriage.com/pytest-dev/pytest/badges/users.svg
:target: https://www.codetriage.com/pytest-dev/pytest

The ``pytest`` framework makes it easy to write small tests, yet
scales to support complex functional testing for applications and libraries.

An example of a simple test:

.. code-block:: python

# content of test_sample.py
def inc(x):
return x + 1


def test_answer():
assert inc(3) == 5


To execute it::

$ pytest
============================= test session starts =============================
collected 1 items

test_sample.py F

================================== FAILURES ===================================
_________________________________ test_answer _________________________________

def test_answer():
> assert inc(3) == 5
E assert 4 == 5
E + where 4 = inc(3)

test_sample.py:5: AssertionError
========================== 1 failed in 0.04 seconds ===========================


Due to ``pytest``'s detailed assertion introspection, only plain ``assert`` statements are used. See `getting-started `_ for more examples.


Features
--------

- Detailed info on failing `assert statements `_ (no need to remember ``self.assert*`` names);

- `Auto-discovery
`_
of test modules and functions;

- `Modular fixtures `_ for
managing small or parametrized long-lived test resources;

- Can run `unittest `_ (or trial),
`nose `_ test suites out of the box;

- Python 2.7, Python 3.4+, PyPy 2.3, Jython 2.5 (untested);

- Rich plugin architecture, with over 315+ `external plugins `_ and thriving community;


Documentation
-------------

For full documentation, including installation, tutorials and PDF documents, please see https://docs.pytest.org/en/latest/.


Bugs/Requests
-------------

Please use the `GitHub issue tracker `_ to submit bugs or request features.


Changelog
---------

Consult the `Changelog `__ page for fixes and enhancements of each version.


Support pytest
--------------

You can support pytest by obtaining a `Tideflift subscription`_.

Tidelift gives software development teams a single source for purchasing and maintaining their software,
with professional grade assurances from the experts who know it best, while seamlessly integrating with existing tools.


.. _`Tideflift subscription`: https://tidelift.com/subscription/pkg/pypi-pytest?utm_source=pypi-pytest&utm_medium=referral&utm_campaign=readme


Security
^^^^^^^^

pytest has never been associated with a security vunerability, but in any case, to report a
security vulnerability please use the `Tidelift security contact `_.
Tidelift will coordinate the fix and disclosure.


License
-------

Copyright Holger Krekel and others, 2004-2020.

Distributed under the terms of the `MIT`_ license, pytest is free and open source software.

.. _`MIT`: https://github.com/pytest-dev/pytest/blob/master/LICENSE