Django Packages: A Case Study

Django Packages Case Study 1

We do cartwheels 2

We do cartwheels• Python• Django• Pinax• django-cms• Teach 3

We do cartwheels• Python• Django• Pinax• django-cms• Teach ...and we’re hiring! 3

Inception 4

Inception 5

Inception 6

Inception “How about a site to help ﬁnd Django apps?” 7

Inception django-apps.comTags! Ads! 8

InceptionLicenseSVN? Ads! Feed 9

InceptionDjango Packages 10

Inception Bullets of design 11

Inception• Usability Bullets of design 11

Inception• Usability• Search Bullets of design 11

Inception• Usability• Search Bullets of design• Comparison 11

Inception• Usability• Search Bullets of design• Comparison• No Ads 11

InceptionTeam Scared of Rabbits 12

Mullets 13

MulletsAPOLOGY: No pictures of me with a mullet 13

Tag cloud is themullet of web 2.0 15

Grids, not Tags 16

Grids, not Tags User created categories lacking metadata 16

Grids, not tagscode.djangoproject.com/wiki/CMSAppsComparison 17

Grids, not tagscode.djangoproject.com/wiki/CMSAppsComparisonWhat if tags could have all this information? 17

Grids, not tagscode.djangoproject.com/wiki/CMSAppsComparisonEasy to model withMany to Many! 18

Grids, not tagscode.djangoproject.com/wiki/CMSAppsComparisonEasier to model with EAV using NoSQL! 19

Grids, not tagscode.djangoproject.com/wiki/CMSAppsComparisonEasy to model withMany to Many! 20

Not gonna ﬁtwww.djangopackages.com/grids/g/nosql/ 21

Only hard metrics* 22

Only hard metrics*• No opinions 22

Only hard metrics*• No opinions• No rating systems 22

Only hard metrics*• No opinions• No rating systems• No comments 22

Only hard metrics* “We wanted hard metrics. So the package numbers are pulled from the repo sites such as Github,• No opinions Bitbucket, and Google Code. Otherwise things get weighted funny. Sure, this system can be• No rating systems monkeyed with, but its a good metric for now. Weve had• No comments suggestions from Django core developers of coming up with a quality check system, things like pypants and/or a formalized approval system.” 22

Only hard metrics* “We wanted hard metrics. So the package numbers are pulled from the repo sites such as Github,• No opinions Bitbucket, and Google Code. Otherwise things get weighted funny. Sure, this system can be• No rating systems monkeyed with, but its a good metric for now. Weve had• No comments suggestions from Django core developers of coming up with a quality check system, things like pypants and/or a formalized approval system.” *Also because it kept the project scope smaller 22

Only hard metrics 23

Only hard metricsYes/No 23

Only hard metrics PyPIYes/No 23

Only hard metrics PyPIYes/No Supported repo sites 23

Only hard metrics PyPI GoogleGithub SourceforgeBitbucket Launchpad 24

Regex vs XML 25

Regex vs XML• Could not ﬁnd PyPI API 25

Regex vs XML• Could not ﬁnd PyPI API• DOAP is next to useless 25

Regex vs XML• Could not ﬁnd PyPI API• DOAP is next to useless• Time to slurp data out of web pages 25

Regex vs XML• Could not ﬁnd PyPI API• DOAP is next to useless• Time to slurp data out of web pages• I’m faster at regex then XML parsing 25

Regex vs XML• Could not ﬁnd PyPI API• DOAP is next to useless• Time to slurp data out of web pages• I’m faster at regex then XML parsing• And I got it working 25

Regex vs XMLbit.ly/cu5Prt 26

Regex vs XML• Could not ﬁnd PyPI API• DOAP is next to useless• Time to slurp data out of web pages• I’m faster at regex then XML parsing• And I got it working 27

Dash Architecture 28

Dash Architecture• Django 1.2.1 / Pinax 0.9a1 28

Dash Architecture• Django 1.2.1 / Pinax 0.9a1• Python 2.6.5 28

Dash Architecture• Django 1.2.1 / Pinax 0.9a1• Python 2.6.5• Sqlite 3.6.12 28

Dash Architecture• Django 1.2.1 / Pinax 0.9a1• Python 2.6.5• Sqlite 3.6.12• Ubuntu 10.4 28

Dash Architecture• Django 1.2.1 / Pinax 0.9a1• Python 2.6.5• Sqlite 3.6.12• Ubuntu 10.4• HTTP Server: 28

Dash Architecture• Django 1.2.1 / Pinax 0.9a1• Python 2.6.5• Sqlite 3.6.12• Ubuntu 10.4• HTTP Server: Apache 28

Dash Architecture• Django 1.2.1 / Pinax 0.9a1• Python 2.6.5• Sqlite 3.6.12• Ubuntu 10.4• HTTP Server: 28

Dash Architecture• Django 1.2.1 / Pinax 0.9a1• Python 2.6.5• Sqlite 3.6.12• Ubuntu 10.4• HTTP Server: Django Runserver 28

Django Dash Placing 29

Django Dash PlacingI’m not bitter 29

Lessons Learned 30

Lessons LearnedResearch ahead of time API limitations Google Charts rock 30

Lessons Learned 31

Lessons LearnedPEP-8 is your friend python -c “import this” Keep things simple and ﬂat Corrections easier 31

Lessons Learned 32

Lessons Learned Fixtures are a must Test and blow away your stuff constantlyHelps the designer with matching content with layout 32

Lessons Learned 33

Lessons Learned Don’t optimize prematurely Don’t start by removing Django bits Write the project then analyzeEven the simplest of caching will help. 33

Lessons Learned 34

Lessons LearnedHave a system architecture plan 34

Lessons Learned I was nearHave a systemuseless at sys admin architecture plan 34

Lessons Learned I was nearHave a system useless at sys admin architecture plan Audrey to the rescue! 34

Lessons Learned I was near Have a system useless at sys admin architecture plan Audrey to the rescue!“Learn the sys admin stuff cause it affects everything” 34

Lessons Learned 35

Lessons LearnedShare during the dash Bouncing ideas off other teams is handy 35

Lessons Learned 36

Lessons Learned 37

The First Month 38

The First Month “There’s a package for that” 38

The First Month “There’s a package for that”“I’ve got your Django Package right here” 38

The First Month http://www.revsys.com/ 39

The First Month 40

The First Month PyPI GoogleGithub SourceforgeBitbucket Launchpad 41

The First Month 42

The First Month• Apache• Got email functioning• Page cleanup 43

The First MonthWARNING 44

DjangoCon 2010 45

DjangoCon 2010 ﬂickr.com/photos/bﬁrsh 45

DjangoCon 2010Our Friendly DSF president 46

DjangoCon 2010WARNING 47

DjangoCon 2010If I had been there earlier I would not have lost sprinters 48

DjangoCon 2010 49

DjangoCon 2010THIS ROCKS! 49

DjangoCon 2010http://djangopackages.com/api/v1/docs/ 50

Django-CMSdjango-cms.org/en/extensions 51

DjangoCon 2010 django-reversions 52

DjangoCon 2010 PyPI Regex

DjangoCon 2010 PyPI

DjangoCon 2010 PyPIXMLRPC

DjangoCon 2010• AJAX controls on “I use this”• Caching• Fancy permission controls for deletions• History Graphs on grid views• Query Optimization• Unit Tests! 54

Around DjangoCon Used to help track features! 55

Random Hacks of Kindness https://github.com/rhok-planet/crisishacks http://www.crisishacks.com/ 56

AutumnMoved from Kansas to Los Angeles

Early 2011Read the Docs + Django Packages

Read the DocsDjango Packages 59

PyCon 2011 60

PyCon 2011WARNING 60

Pycon Sprint 61

Pycon SprintStarting early! 61

Pycon Sprint PyPI GoogleGithub SourceforgeBitbucket Launchpad 62

Pycon SprintBadges 63

Pycon Sprint Top 10 Django-CMS Downloads Plugin Core Badges ApprovedRead the ThisDocs Site! On PyPI Coverage Top 10 80+% Used 63

Pycon Sprint PackagePagination 64

Pycon SprintShopping CartSelect your packages and get a requirements ﬁle! 65

Pycon Sprint X-Y Axisdjangopackages.com/grids/g/deployment 66

pythonpackages.com ? 67

pythonpackages.com Are you going to replace PyPI? 68

pythonpackages.com Are you going to replace PyPI? NO! 68

pythonpackages.comPhase I 69

pythonpackages.com Only display packagesformally released on PyPI 70

pythonpackages.com Release your stuff! 71

Questions? 72

http://ontwik.com	291
http://lanyrd.com	51
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Django Packages: A Case Study

by Daniel Greenfeld on Mar 13, 2011

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