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Python loves your contributions by Stéphane Wirtel PyCon Ukraine 2018 - Kharkiv - 04/28/2018 @matrixise - 1 / 103

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PythonFOSDEM CPython contributor #fellow member of @ThePSF member of EuroPython Society I live in Belgium Hi PyCon! I am Stéphane @matrixise - 2 / 103

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Contributing? @matrixise - 3 / 103

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Chapter 1: The Code @matrixise - 4 / 103

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Once upon a time... @matrixise - 5 / 103

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a bunch of happy developers, @matrixise - 6 / 103

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have developed a new language @matrixise - 7 / 103

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Python @matrixise - 8 / 103

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Nice!!! we are here only for this language ;-) @matrixise - 9 / 103

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for them, the main tool for the management, for the issues, and the contributions was the issue tracker! @matrixise - 10 / 103

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The Issue Tracker bugs.python.org aka b.p.o @matrixise - 11 / 103

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The Issue Tracker could only handle the contributions as patches @matrixise - 12 / 103

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one or many patch(es) @matrixise - 13 / 103

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one or many patch(es) For the same issue @matrixise - 14 / 103

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Rietveld for the reviews :-/ @matrixise - 15 / 103

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Rietveld @matrixise - 16 / 103

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Rietveld @matrixise - 17 / 103

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Rietveld was Custom fork of the official Rietveld Maintained by one person Not really sexy No hightligted diff Not perfectly integrated with the Bug Tracker @matrixise - 18 / 103

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Rietveld was Custom fork of the official Rietveld Maintained by one person Not really sexy No hightligted diff Not perfectly integrated with the Bug Tracker @matrixise - 19 / 103

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Typical Work ow @matrixise - 20 / 103

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Typical Work ow As a contributor Open an issue Checkout the CPython source code from hg.python.org Make the fix Upload a patch Have a review with Rietveld @matrixise - 21 / 103

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Typical Work ow As a core dev Download the patch Make sure it still applies cleanly Fix the conflicts or ask a new patch to the contributor Run test suite manually (10-15 min) Commit the change manually Write the commit message Commit in the maintenance branches first and then merged in the default branch Run the test suite manually again Commit the merge Push the changes @matrixise - 22 / 103

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Typical Work ow About the patch Is there a conflict? Who is the author? Is there a description? Where is the reference of revision? diff --git a/Misc/python.man b/Misc/python.man --- a/Misc/python.man +++ b/Misc/python.man @matrixise - 23 / 103

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Typical Work ow About the continuous integration Check the buildbots (between 1h & 1d... if we are lucky) Frequent bugs on Windows the developers are on Linux or OSX or just too lazy If green, port to several branches can introduce new bugs in the other branches risk of conflicts tests executed by Buildbot @matrixise - 24 / 103

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Typical Work ow About the continuous integration Check the buildbots (between 1h & 1d... if we are lucky) Frequent bugs on Windows the developers are on Linux or OSX or just too lazy If green, port to several branches can introduce new bugs in the other branches risk of conflicts tests executed by Buildbot CI: Only on the stable branches (2.7, 3.4+) @matrixise - 25 / 103

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Typical Work ow Status Download the sources from https://hg.python.org Use Patches Store them on bugs.python.org Use a custom version of Rietveld Complex Workflow @matrixise - 26 / 103

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Di culty for the contribution @matrixise - 27 / 103

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I am God! I want to contribute, change the work ow! @matrixise - 28 / 103

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How? @matrixise - 29 / 103

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Too simple ;-) @matrixise - 30 / 103

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We have just switched to Git/GitHub! Read for more information: PEP 512: Migration from hg.python.org to Git/GitHub @matrixise - 31 / 103

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The Open Hub 48% for SVN 37% for Git 2% for Mercurial PyPI 62% for Git 22% for Mercurial 13% for the rest Why Git? Git is 3 times more popupar as Mercurial for the top 100 projects on PyPI. @matrixise - 32 / 103

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Why GitHub? GitHub is popular and familiar Primary place if you want to contribute to a project Avoid a custom infrastructure Concept of Pull Requests are easier to review have nice syntax hightligted diffs can be commented Web API ( REST & GraphQL ) @matrixise - 33 / 103

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GitHub - Dashboards @matrixise - 34 / 103

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GitHub - Web interface @matrixise - 35 / 103

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GitHub - Reviews Integrated review Comment the code and ask for changes @matrixise - 36 / 103

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GitHub - Reviews - Ready to merge @matrixise - 37 / 103

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Migrations to GitHub 15th January 2016: PEPs 22nd July 2016: DevGuide 11st February 2017: CPython (2 years) @matrixise - 38 / 103

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Automation @matrixise - 39 / 103

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Run the test suite and the performance tests Run the code coverage Compile the documentation Execute for master and the stable branches (2.7, 3.6) Execute on the branches from the contributors Automation @matrixise - 40 / 103

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The BOTS... @matrixise - 41 / 103

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Job checks if the the commiter has signed the Contributor Agreement aka CLA The knights who say ni! https://github.com/python/the-knights-who-say-ni CLA: https://www.python.org/psf/contrib/contrib-form/ @matrixise - 42 / 103

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Job checks the title of the PR with bedevere/issue-number has a Misc/NEWS.d/next entry with bedevere/news play with the labels awaiting review, awaiting merge, awaiting core review Bedevere! https://github.com/python/bedevere @matrixise - 43 / 103

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Job based on needs backport to X.Y backports a Pull Request to an other branch merges a complete backport Miss Islington! https://github.com/python/miss-islington @matrixise - 44 / 103

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BOTS + Automations = @matrixise - 45 / 103

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BOTS + Automations = @matrixise - 46 / 103

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BOTS + Automations = @matrixise - 47 / 103

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as you can see BOTS are really useful for the core-devs @matrixise - 48 / 103

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Status about the Work ow @matrixise - 49 / 103

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Before Contributor Open an issue Clone Upload a patch Core Dev Wait a review of a Core Dev Download the patch Fix the conflicts Run the tests manually Run the code coverage manually Commit manually Write the commit message Merge into the branches Run the test suite manually Commit the merge Push the changes etc... process is long & manual & error prone @matrixise - 50 / 103

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Before Contributor Open an issue Clone Upload a patch Core Dev Wait a review of a Core Dev Download the patch Fix the conflicts Run the tests manually Run the code coverage manually Commit manually Write the commit message Merge into the branches Run the test suite manually Commit the merge Push the changes etc... process is long & manual & error prone @matrixise - 51 / 103

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After Contributor Open an issue Clone Create a Pull Request Core Dev Review from contributors or core-dev Wait the feedback of the BOTS + Automation Wait the signal Mark the PR as needs backport to X.Y process is short & automatic @matrixise - 52 / 103

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After Contributor Open an issue Clone Create a Pull Request Core Dev Review from contributors or core-dev Wait the feedback of the BOTS + Automation Wait the signal Mark the PR as needs backport to X.Y process is short & automatic @matrixise - 53 / 103

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Statistics from Feb 2017 to Apr 2018 April is not yet nished @matrixise - 54 / 103

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Pull Requests: 6542 @matrixise - 55 / 103

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Merged Pull Requests: 4966 @matrixise - 56 / 103

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Top Merge Time @matrixise - 57 / 103

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Core-Devs & Contributors / Numbers @matrixise - 58 / 103

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Core-Devs & Contributors / Pull Requests @matrixise - 59 / 103

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Code @matrixise - 60 / 103

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Documentation There is the PEP 545 for that!!! @matrixise - 61 / 103

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Yeah! CPython loves your Pull Requests @matrixise - 62 / 103

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Yeah! CPython loves your Pull Requests and @matrixise - 63 / 103

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Your rst contribution could be the Ukrainian/Russian translation of the documentation. @matrixise - 64 / 103

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Your rst contribution could be the Ukrainian/Russian translation of the documentation. Read PEP 545 @matrixise - 65 / 103

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@matrixise - 66 / 103

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Communication We have several channels: Mailing lists [email protected] [email protected] [email protected] [email protected] IRC (irc://irc.freennode.net/#python-dev) @matrixise - 67 / 103

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Communication ZulipChat @matrixise - 68 / 103

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Then @matrixise - 69 / 103

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We are ready for the future! @matrixise - 70 / 103

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Chapter 2: The Community @matrixise - 71 / 103

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 -> Language and Community  Brett Cannon, PyCon US 2014 @matrixise - 72 / 103

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The Python Community is respectful, safe and open! Code of Conduct @matrixise - 73 / 103

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Contributions @matrixise - 74 / 103

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Contributions Mailing lists IRC / slack channels / ZulipChat Meetups PyLadies DjangoGirls (Kiev, Kharkov?) Sprints PyCons @matrixise - 75 / 103

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Who organise? @matrixise - 76 / 103

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Who organise? you! @matrixise - 77 / 103

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Who organise? you! me! @matrixise - 78 / 103

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Who organise? you! me! all of us! @matrixise - 79 / 103

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Conferences PyCon Ukraine 2018 PyCon US in Cleveland (USA) EuroPython 2018 (Edinburgh / UK) @matrixise - 80 / 103

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Conferences PyCon Ukraine 2018 PyCon US in Cleveland (USA) EuroPython 2018 (Edinburgh / UK) but also a lot of conferences DjangoCon Europe PyCon CZ 2018 (Prague / Czech Republic) PyCon PL 2018 (Ossa / Poland) ... https://python.org/events @matrixise - 81 / 103

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Conferences PyCon Ukraine 2018 PyCon US in Cleveland (USA) EuroPython 2018 (Edinburgh / UK) but also a lot of conferences DjangoCon Europe PyCon CZ 2018 (Prague / Czech Republic) PyCon PL 2018 (Ossa / Poland) ... https://python.org/events You could also create a new conference PyConWeb PyData @matrixise - 82 / 103

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DjangoGirls &| PyLadies @matrixise - 83 / 103

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PyLadies http://www.pyladies.com/ @matrixise - 84 / 103

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DjangoGirls https://djangogirls.org/kharkiv/ @matrixise - 85 / 103

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How to become a good contributor Is there a recipe? @matrixise - 86 / 103

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No! @matrixise - 87 / 103

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No! maybe you will fail, but at least, you tried an initiative! @matrixise - 88 / 103

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Chapter 3 @matrixise - 89 / 103

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PSF Mission "The mission of the Python Software Foundation is to promote, protect, and advance the Python programming language, and to support and facilitate the growth of a diverse and international community of Python programmers". @matrixise - 90 / 103

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Python Software Foundation Intellectual Property Members Money @matrixise - 91 / 103

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Intellectual Property Software Licenses Trademarks @matrixise - 92 / 103

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Members Basic (non-voting) Supporting Contributing/Managing Fellows @matrixise - 93 / 103

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Money comes from... Donations Sponsorships PyCon US @matrixise - 94 / 103

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Money goes to... Other PyCons Workshops Meetups fees Software projects Infrastructure Employees ... @matrixise - 95 / 103

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The PSF is NOT the Python Community, you are a member of this awesome Community @matrixise - 96 / 103

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Think globally; act locally Join the PSF (it's free) Engage with a community (or start one) Contribute - organise/mentor/code @matrixise - 97 / 103

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What Can I Do for Python ? @matrixise - 98 / 103

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What Can I Do for Python ? now, you know! @matrixise - 99 / 103

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The contribution is for... @matrixise - 100 / 103

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@matrixise - 101 / 103

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Thank you! Дякую @matrixise [email protected] @matrixise - 102 / 103

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@matrixise - 102 / 103

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Credits Talks Naomi Ceder for her presentation "Stay for the community" Brett Cannon for his sentence "Came for the language, stayed for the community" Images http://www.pierre-leautey.fr/lagence-de-communication-et-marketing-ds- consulting-de-pierrette-sicot/ @matrixise - 103 / 103