No matter if you’re a junior developer just starting your career or a seasoned senior, you’ll run into moments when the software isn’t doing what you’re telling it to do. How you approach the situation when it happens will have a huge impact on your productivity, so in this talk I’ll walk you through both technical tools and solutions as well as some valuable non-technical approaches.

1. HelPy :: 24.5.2022 :: @hamatti
Debugging Django
Juha-Matti Santala

2. @hamatti
https://2022.djangoday.dk/

3. Raise your hand
if you’ve ever
written a bug!
@hamatti

4. Hi, I’m Juhis!
Developer Advocate @ Futurice
Programming mentor
Founder of Turku ❤ Frontend and
Helsinki Dev Lunch
Organizer at React Finland
@hamatti :: hamatti.org

5. @hamatti

7. DEBUGGING
STRESS 😫
@hamatti

8. deadlines
internal
expectations
external
expectations
(teammates, managers, clients, users)
why doesn't it
work!?!
@hamatti

9. FUNDAMENTALS
NON-TECHNICAL METHODS
TOOLS & TECHNIQUES
@hamatti

10. FUNDAMENTALS
@hamatti

11. STOP & BREATHE
@hamatti

12. FROM END TO START
@hamatti

13. https://twitter.com/JenMsft/status/1256007715425382400/
@hamatti

14. TOOLS & TECHNIQUES
@hamatti

15. PRINTING TO CONSOLE
@hamatti

16. PRINT
@hamatti

17. DEBUGGER
@hamatti

18. DEBUGGER
@hamatti

19. DEBUGGER: LIST
@hamatti

20. DEBUGGER: ARGS
@hamatti

21. DEBUGGER: STATE
@hamatti

22. DEBUGGER: FILTER
https://stackoverflow.com/a/2324210
@hamatti

23. DEBUGGER: FILTER
@hamatti

24. DJANGO DEBUG
TOOLBAR
@hamatti

25. From: https://github.com/jazzband/django-debug-toolbar

26. DJANGO-RUNDBG
@hamatti

27. @hamatti

28. https://www.octobot.io/blog/django-rundbg-release/
https://github.com/octobot-dev/django-rundbg
@hamatti

29. IDE/EDITOR SUPPORT
@hamatti

30. (screenshot from jetbrains.com) @hamatti

31. https://www.youtube.com/watch?v=6GDBxYm-hW4
@hamatti

32. KOLO
@hamatti
kolo.app

33. @hamatti

34. https://2022.djangoday.dk/talks/wilhelm/

35. @hamatti

36. NON-TECHNICAL METHODS
@hamatti

37. BRAIN DUMP
@hamatti

38. 1. WHAT IS THE PROBLEM?
2. WHAT ARE YOUR ASSUMPTIONS?
3. WHAT HAVE YOU TRIED?
WRITE DOWN
@hamatti

39. TAKE A BREAK
@hamatti

40. TALK TO
A RUBBER DUCK
@hamatti

41. PyCon Estonia
25.8.
pycon.ee
PyCon Sweden
autumn 2022
pycon.se
Django Day CPH
March 2023
djangoday.dk

42. QUESTIONS?
THANKS!
@hamatti :: hamatti.org :: futurice.com