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https://github.com/nandoflorestan/releaser

Automates the process of releasing a new version of Python software
https://github.com/nandoflorestan/releaser

library python python2 python3 release-automation

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Automates the process of releasing a new version of Python software

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README 

        
====================================================================

Easily write a script to release a new version, with variable steps.

====================================================================



Releasing software is a painful process. There are several checks that

the developer must make for each new version. The developer is prone

to forget one of them or perform the checks out of the optimal order.

As Murphy would have it, many buggy releases are created for this reason.



*releaser* is a little framework the developer can use to write a script to

guide him through the new version release process, such that many checks

are performed automatically. (Each software project will have

a release script that differs a little bit from others.)



Now that I use *releaser* I can release my Python libraries more quickly and

easily, so I find that I release more often. Well worth the initial investment.



Many steps of a common Python release process have already been implemented,

and you can easily write your own. If you do write a step, please donate it

to the project by making a pull request on GitHub_.



Installing *releaser*

=====================



Activate your virtualenv, then::



    pip install releaser



Getting started

===============



Simply `download this script`_ to the root of your project::



    curl -O https://raw.github.com/nandoflorestan/releaser/master/release_new_version.py

    chmod +x ./release_new_version.py

    git add release_new_version.py



Then edit the script as necessary. (You can `read it here`_.)



When you execute the script, the configured steps are executed in order. The

screen shows little information, but you have all details in the log file.



Some of the steps are interactive; for instance, you may be asked to

verify the contents of a zip or wheel file before it is uploaded to pypi_.

*releaser* also makes you type the number of the version being released, which

is then validated (for instance, it is compared to the current version), then

written to a source code file that belongs to your project.



Rolling back

============



If any one of the steps fails, *releaser* asks you whether you would like it to

rewind the process. (Yes, you get to decide.) How does this work?



A few of the steps (especially those involving git) have a rollback() method.

For other steps (especially those that just check things at the beginning)

rewinding wouldn't make any sense since they don't leave durable artifacts.



If your steps are correctly configured, rolling back leaves you exactly as you

were before *releaser* ran. But:



Note the GitPush step has special behaviour. When it executes successfully

but an error occurs in a later step, *releaser* decides NOT to roll back

GitPush and the steps that preceded it. This is because one cannot

delete git history once it has been pushed to a public server and

GitPush tends to be one of the last steps anyway, so it is easier to

finish the release manually than to deal with git history inconsistencies.



Other steps (such as creating a release on pypi_) cannot be automatically

rewinded for technical reasons, but *releaser* warns you that you have to

do it manually before asking whether to roll back the release.



Links

=====



Our project home and issue tracker are at GitHub_.

It's easy to `read the source code`_.



You can read the

`change log here `_.



A popular alternative to *releaser* is the project `zest.releaser`_. It differs

in features, manners of extensibility and support for Python versions.



.. _`download this script`: https://raw.github.com/nandoflorestan/releaser/master/release_new_version.py

.. _`read it here`: https://github.com/nandoflorestan/releaser/blob/master/release_new_version.py

.. _pypi: https://pypi.python.org/pypi

.. _GitHub: https://github.com/nandoflorestan/releaser

.. _`read the source code`: https://github.com/nandoflorestan/releaser/tree/master/releaser

.. _`zest.releaser`: https://pypi.python.org/pypi/zest.releaser