1. The One Way
Daniel Greenfeld

2. http://bit.ly/nFqO57

3. The 13th Aphorism
There should be one–
and preferably only one
–obvious way to do it.

4. What does this mean?
• Implementation in core Python should be
obvious
• Control Structures
• Readability
• blah blah - remember Raymond’s Talk?

5. What does this mean?
• We all follow the same protocols
• DB-API
• WSGI
• Compression
• blah blah - remember Raymond’s Talk?

6. How far does this carry?

7. How far does Python’s
“The is one obvious way to do it” carry?
(1 PIL vs many? 1 framework to use? 1 NLTK?)

8. How far does Python’s
“The is one obvious way to do it” carry?
(1 PIL vs many? 1 framework to use? 1 NLTK?)
I understand “one way” from the idiom’s point
of view, not necessarily implementations

9. How far does Python’s
“The is one obvious way to do it” carry?
(1 PIL vs many? 1 framework to use? 1 NLTK?)
I understand “one way” from the idiom’s point
of view, not necessarily implementations
The bigger the problem space the more valid trade-offs
there are, so more choices start to make sense.

10. Web Frameworks?

11. Is Zope the obvious way?
• Some people think so
• Other people do not
• Django, Pyramid, Twisted, Flask, et al
• Solved problems unsuited to Zope
• Attracted a new breed of developer
• Django’s culture of documentation

12. Desktop GUI?

13. Is TKinter the obvious way?
• Some people think so
• Other people do not
• wxPython
• pyQT
• PyGame!

14. Image Processing

15. Is PIL the obvious way?
• Scaling
• Encoding/decoding
• Installation

16. Is PIL the obvious way?
• Scaling - the experts complain
• Encoding/decoding - the experts complain
• Installation

17. Is PIL the obvious way?
• Scaling - the experts complain
• Encoding/decoding - the experts complain
• Installation
http://pypi.python.org/pypi/Pillow

18. Is PIL the obvious way?
• Scaling - the experts complain
• Encoding/decoding - the experts complain
• Installation
http://pypi.python.org/pypi/Pillow
Really?!?

19. Is PIL the obvious way?
• Scaling - the experts complain
• Encoding/decoding - the experts complain
• Installation
http://pypi.python.org/pypi/Pillow
Really?!?
Why do we make Alex Clark do this?

20. To the Radical Zen-ists...

21. http://bit.ly/nFqO57

22. The 9th Aphorism
Although
practicality
beats
purity.