iPhone Python love affair

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Anna Callahan

How to build an API for mobile devices in Django using Tastypie.

Technology

AN IPHONE-PYTHON
LOVE AFFAIR
Building APIs for Mobile

Wednesday, June 8, 2011

Music Hack Day, February 2011

Samantha & Matt

Wednesday, June 8, 2011

ACCOMPLICE #1
Anna Callahan: iOS developer, jazz trumpet player
@jazztpt
Wednesday, June 8, 2011

ACCOMPLICE #2
Nate Aune: Django/Python/Plone developer, saxophonist
@natea
Wednesday, June 8, 2011

MOBILE TAKEOVER
If you’re not building for mobile now, you will be soon.

Wednesday, June 8, 2011

WHAT’S DIFFERENT ABOUT
MOBILE?

• Isn’t REST appropriate for everything?

• Don’t I want a single API for all clients?

Wednesday, June 8, 2011

WHAT’S DIFFERENT ABOUT
MOBILE?
Mobile users are unwilling to wait.

1. Connection = slow, spotty, or
non-existent

2. Mobile is not as powerful at
fetching & saving data or calculations

Wednesday, June 8, 2011

SO YOUR API SHOULD

• Return hierarchies of related data

• Authentication and Authorization

• Have mobile-speciﬁc error codes & messages

• Accept arrays of related or unrelated data

• Return pre-calculated data or data that doesn’t exist on device

Wednesday, June 8, 2011

HIERARCHIES OF DATA

Bad :( Good!

Cards Tracks

Wednesday, June 8, 2011

SIMPLE REST API

Basic CRUD operations via API.
Wednesday, June 8, 2011

URLS.PY

Now access cards and tracks with /api/card/ and /api/track/
Wednesday, June 8, 2011

WHAT ABOUT TRACKS?

Default post_list from resources.py (create object via POST)
Wednesday, June 8, 2011

WHAT ABOUT TRACKS?

api.py post_list (override method)

Wednesday, June 8, 2011

MOBILE WANTS
HIERARCHICAL DATA

Wednesday, June 8, 2011

TASTYPIE MAKES IT EASY

Wednesday, June 8, 2011

AUTHENTICATION &
AUTHORIZATION

Authentication - let the user in the door
Authorization - what the user can see
Wednesday, June 8, 2011

LIMITING BY USER

Returns only the objects owned by the current user.

Wednesday, June 8, 2011

ERROR CODES

Ideally your API should:

•Never return HTML
•Tailor response codes to actions on device
•Return messages designed for the end user
•Never, ever return HTML

Wednesday, June 8, 2011

JSON ERROR RESPONSES

override wrap_view from resources.py
Wednesday, June 8, 2011

JSON ERROR HANDLING

Objective-C in Xcode

Wednesday, June 8, 2011

ACCEPT ARRAYS OF DATA

• User enters tunnel

• User uses your app

• User closes your app

• User exits tunnel

Wednesday, June 8, 2011

PRE-CALCULATED DATA OR
DATA NOT STORED ON
DEVICE

• No other users are stored
on device

• Leaderboards or other
calculated user data must
come from the server

Wednesday, June 8, 2011

THANK YOU!

• Music Hack Day Accomplices: Matt Katz, Alexandre Passant,
Jeff Novich, Twom Deryckere

• Danielzilla (Daniel Lindsley) - TastyPie

• IsaacKelly

• DjangoCon

Wednesday, June 8, 2011

MORE INFO

• Valentun.es live site
http://valentun.es

• Valentunes (Django code)
https://github.com/natea/valentunes

• Valentunes (iPhone code)
https://github.com/jazztpt/Valentunes_iPhone

• Valentunes (Twilio integration)
https://github.com/terraces/valentunes-twilio

Wednesday, June 8, 2011

DJANGO API FRAMEWORKS

• TastyPie documentation (the one we used)
http://readthedocs.org/docs/django-tastypie/en/latest/

• django-piston
https://bitbucket.org/jespern/django-piston/

• Django REST framework
http://django-rest-framework.org

Wednesday, June 8, 2011

Welcome to UiPath Test Automation using UiPath Test Suite series part 4. In this session, we will cover Test Manager overview along with SAP heatmap. The UiPath Test Manager overview with SAP heatmap webinar offers a concise yet comprehensive exploration of the role of a Test Manager within SAP environments, coupled with the utilization of heatmaps for effective testing strategies. Participants will gain insights into the responsibilities, challenges, and best practices associated with test management in SAP projects. Additionally, the webinar delves into the significance of heatmaps as a visual aid for identifying testing priorities, areas of risk, and resource allocation within SAP landscapes. Through this session, attendees can expect to enhance their understanding of test management principles while learning practical approaches to optimize testing processes in SAP environments using heatmap visualization techniques What will you get from this session? 1. Insights into SAP testing best practices 2. Heatmap utilization for testing 3. Optimization of testing processes 4. Demo Topics covered: Execution from the test manager Orchestrator execution result Defect reporting SAP heatmap example with demo Speaker: Deepak Rai, Automation Practice Lead, Boundaryless Group and UiPath MVP

Epistemic Interaction - tuning interfaces to provide information for AI support

Alan Dix

Paper presented at SYNERGY workshop at AVI 2024, Genoa, Italy. 3rd June 2024 https://alandix.com/academic/papers/synergy2024-epistemic/ As machine learning integrates deeper into human-computer interactions, the concept of epistemic interaction emerges, aiming to refine these interactions to enhance system adaptability. This approach encourages minor, intentional adjustments in user behaviour to enrich the data available for system learning. This paper introduces epistemic interaction within the context of human-system communication, illustrating how deliberate interaction design can improve system understanding and adaptation. Through concrete examples, we demonstrate the potential of epistemic interaction to significantly advance human-computer interaction by leveraging intuitive human communication strategies to inform system design and functionality, offering a novel pathway for enriching user-system engagements.

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iPhone Python love affair

1. AN IPHONE-PYTHON LOVE AFFAIR Building APIs for Mobile Wednesday, June 8, 2011

2. Music Hack Day, February 2011 Samantha & Matt Wednesday, June 8, 2011

3. ACCOMPLICE #1 Anna Callahan: iOS developer, jazz trumpet player @jazztpt Wednesday, June 8, 2011

4. ACCOMPLICE #2 Nate Aune: Django/Python/Plone developer, saxophonist @natea Wednesday, June 8, 2011

5. VALENTUN.ES! Wednesday, June 8, 2011

6. Wednesday, June 8, 2011

7. MOBILE TAKEOVER If you’re not building for mobile now, you will be soon. Wednesday, June 8, 2011

8. WHAT’S DIFFERENT ABOUT MOBILE? • Isn’t REST appropriate for everything? • Don’t I want a single API for all clients? Wednesday, June 8, 2011

9. WHAT’S DIFFERENT ABOUT MOBILE? Mobile users are unwilling to wait. 1. Connection = slow, spotty, or non-existent 2. Mobile is not as powerful at fetching & saving data or calculations Wednesday, June 8, 2011

10. SO YOUR API SHOULD • Return hierarchies of related data • Authentication and Authorization • Have mobile-speciﬁc error codes & messages • Accept arrays of related or unrelated data • Return pre-calculated data or data that doesn’t exist on device Wednesday, June 8, 2011

11. HIERARCHIES OF DATA Bad :( Good! Cards Tracks Wednesday, June 8, 2011

12. CARD CLASS Wednesday, June 8, 2011

13. TRACK CLASS Wednesday, June 8, 2011

14. SIMPLE REST API Basic CRUD operations via API. Wednesday, June 8, 2011

15. URLS.PY Now access cards and tracks with /api/card/ and /api/track/ Wednesday, June 8, 2011

16. CREATE A CARD Wednesday, June 8, 2011

17. WHAT ABOUT TRACKS? Default post_list from resources.py (create object via POST) Wednesday, June 8, 2011

18. WHAT ABOUT TRACKS? api.py post_list (override method) Wednesday, June 8, 2011

19. MOBILE WANTS HIERARCHICAL DATA Wednesday, June 8, 2011

20. TASTYPIE MAKES IT EASY Wednesday, June 8, 2011

21. AUTHENTICATION & AUTHORIZATION Authentication - let the user in the door Authorization - what the user can see Wednesday, June 8, 2011

22. LIMITING BY USER Returns only the objects owned by the current user. Wednesday, June 8, 2011

23. ERROR CODES Ideally your API should: •Never return HTML •Tailor response codes to actions on device •Return messages designed for the end user •Never, ever return HTML Wednesday, June 8, 2011

24. JSON ERROR RESPONSES override wrap_view from resources.py Wednesday, June 8, 2011

25. JSON ERROR HANDLING Objective-C in Xcode Wednesday, June 8, 2011

26. Wednesday, June 8, 2011

27. ACCEPT ARRAYS OF DATA • User enters tunnel • User uses your app • User closes your app • User exits tunnel Wednesday, June 8, 2011

28. PRE-CALCULATED DATA OR DATA NOT STORED ON DEVICE • No other users are stored on device • Leaderboards or other calculated user data must come from the server Wednesday, June 8, 2011

29. THANK YOU! • Music Hack Day Accomplices: Matt Katz, Alexandre Passant, Jeff Novich, Twom Deryckere • Danielzilla (Daniel Lindsley) - TastyPie • IsaacKelly • DjangoCon Wednesday, June 8, 2011

30. MORE INFO • Valentun.es live site http://valentun.es • Valentunes (Django code) https://github.com/natea/valentunes • Valentunes (iPhone code) https://github.com/jazztpt/Valentunes_iPhone • Valentunes (Twilio integration) https://github.com/terraces/valentunes-twilio Wednesday, June 8, 2011

31. DJANGO API FRAMEWORKS • TastyPie documentation (the one we used) http://readthedocs.org/docs/django-tastypie/en/latest/ • django-piston https://bitbucket.org/jespern/django-piston/ • Django REST framework http://django-rest-framework.org Wednesday, June 8, 2011

iPhone Python love affair

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