Metadata-Version: 2.4
Name: xenon
Version: 0.7.0
Summary: Monitor code metrics for Python on your CI server
Home-page: https://xenon.readthedocs.org/
Download-URL: https://pypi.python.org/xenon/
Author: Michele Lacchia
Author-email: michelelacchia@gmail.com
License: MIT
Platform: any
Classifier: Development Status :: 4 - Beta
Classifier: Environment :: Console
Classifier: Intended Audience :: Developers
Classifier: License :: OSI Approved :: MIT License
Classifier: Natural Language :: English
Classifier: Operating System :: OS Independent
Classifier: Programming Language :: Python
Classifier: Programming Language :: Python :: 2
Classifier: Programming Language :: Python :: 2.6
Classifier: Programming Language :: Python :: 2.7
Classifier: Programming Language :: Python :: 3
Classifier: Programming Language :: Python :: 3.1
Classifier: Programming Language :: Python :: 3.2
Classifier: Programming Language :: Python :: 3.3
Classifier: Programming Language :: Python :: 3.4
Classifier: Programming Language :: Python :: 3.5
Classifier: Topic :: Software Development
Classifier: Topic :: Software Development :: Libraries :: Python Modules
Classifier: Topic :: Software Development :: Quality Assurance
Classifier: Topic :: Utilities
Classifier: Topic :: Internet :: WWW/HTTP
License-File: LICENSE
Requires-Dist: radon<5,>=4
Requires-Dist: requests<3.0,>=2.0
Requires-Dist: PyYAML<6.0,>=4.2b1
Dynamic: author
Dynamic: author-email
Dynamic: classifier
Dynamic: description
Dynamic: download-url
Dynamic: home-page
Dynamic: license
Dynamic: license-file
Dynamic: platform
Dynamic: requires-dist
Dynamic: summary

xenon
=====

.. image:: https://img.shields.io/travis/rubik/xenon/master.svg
    :alt: Travis-CI badge
    :target: https://travis-ci.org/rubik/xenon

.. image:: https://img.shields.io/coveralls/rubik/xenon/master.svg
    :alt: Coveralls badge
    :target: https://coveralls.io/r/rubik/xenon?branch=master

.. image:: https://img.shields.io/pypi/v/xenon.svg
    :alt: PyPI latest version badge
    :target: https://pypi.python.org/pypi/xenon/

.. image:: https://img.shields.io/pypi/format/xenon.svg
    :alt: Download format
    :target: http://pythonwheels.com/

.. image:: https://img.shields.io/pypi/l/xenon.svg
    :alt: Xenon license
    :target: https://pypi.python.org/pypi/xenon/


----

Xenon is a monitoring tool based on `Radon <https://github.com/rubik/radon/>`_.
It monitors your code's complexity.  Ideally, Xenon is run every time you
commit code. Through command line options, you can set various thresholds for
the **complexity** of your code. It will fail (i.e. it will exit with a
non-zero exit code) when any of these requirements is not met.

Installation
------------

With Pip:

.. code-block:: sh

   $ pip install xenon

Or download the source and run the setup file (requires setuptools):

.. code-block:: sh

   $ python setup.py install

Xenon is tested with all versions of Python from **2.7** to **3.6** as well as
**PyPy**.

Usage
-----

Typically you would use Xenon in two scenarios:

1. As a ``git commit`` hook: to make sure that your code never exceeds some
   complexity values.

2. On a **continuous integration** server: as a part of your build, to keep
   under control, as above, your code's complexity. See Xenon's
   `.travis.yml file`_ for an example usage.

The command line
++++++++++++++++

Everything boils down to Xenon's command line usage.
To control which files are analyzed, you use the options ``-e, --exclude`` and
``-i, --ignore``. Both accept a comma-separated list of glob patterns. The
value usually needs quoting at the command line, to prevent the shell from
expanding the pattern (in case there is only one). Every filename is matched
against the *exclude* patterns. Every directory name is matched against the
*ignore* patterns.  If any of the patterns matches, Xenon won't even descend
into them.

The actual threshold values are defined through these options:

* ``-a, --max-average``: Threshold for the *average* complexity (across all the
  codebase).
* ``-m, --max-modules``: Threshold for *modules* complexity.
* ``-b, --max-absolute``: *Absolute* threshold for *block* complexity.


All of these options are inclusive.

An actual example
+++++++++++++++++

.. code-block:: sh

   $ xenon --max-absolute B --max-modules A --max-average A

or, more succinctly:

.. code-block:: sh

   $ xenon -b B -m A -a A

With these options Xenon will exit with a non-zero exit code if any of the
following conditions is met:

* At least one block has a rank higher than ``B`` (i.e. ``C``, ``D``, ``E`` or
  ``F``).
* At least one module has a rank higher than ``A``.
* The average complexity (among all of the analyzed blocks) is ranked with
  ``B`` or higher.

Other resources
---------------

For more information regarding cyclomatic complexity and static analysis in
Python, please refer to Radon's documentation, the project on which Xenon is
based on:

* More on cyclomatic complexity:
  http://radon.readthedocs.org/en/latest/intro.html
* More on Radon's ranking:
  http://radon.readthedocs.org/en/latest/commandline.html#the-cc-command


.. _.travis.yml file: https://github.com/rubik/xenon/blob/master/.travis.yml
