Getting started with python

durianpy presentation

Transcript

1. Getting started with Python by Earvin
2. Who uses Python?
3. All the cool kids do!
5. What is Python?
6. Python language • got the name from Monty Python’s Flying Circus • Multi-paradigm programming language • Object Oriented • Functional • Procedural • Reflective • implementation in December 1989 by Guido • in 2011, it is the 3rd most popular language in github
7. Python language • Open source • Fast ( PyPy ) • Batteries included language
8. Python is similar to… • Ruby • Perl • Java • C
9. Python is different from… • Ruby • Perl • Java • C
10. Checking if a list is empty. looks legit right?
11. It is but not idiomatic
12. Writing idiomatic python 'There should be one-- and preferably only one --obvious way to do it’ from `The zen of python` by Tim Peters
13. formatting: PEP8 http://legacy.python.org/dev/peps/pep-0008/
15. is_required:
16. Bad Python Practice!
17. Bad Python Practice
19. Fixed Python Practice!
20. Hello Python Core concept? Whitespace!!
21. Indenting Code • have no explicit begin or end! • No curly braces to mark where the function starts and stops • The only delimiter is a colon (:) and the indention of the code itself
23. Philosophy of Core Devs • Conservative growth • Aim for a simple implementation • “We read Knuth so you don’t have to”
24. 15 of cool things you can do with python (I expect some applause here…-____-‘ )
25. #1: You can run it anywhere! • Linux • Mac OS X • Windows • Solaris • HP-UX • OS/2 • Android OS • JVM • .NET • FreeBSD • BSD (and some other BSD) https://www.python.org/downloads/
26. #2 learn it fast • Easy to learn but very powerful • for experienced or beginner developers (doesn’t matter) • get up to speed in days (not months/years)
27. [Numbers, Strings, Basic operators,] ! *Note: Programmers lie frequently about being math geniuses when they really aren’t.
28. #3: Numbers
29. #4 Basic operators
30. Q: How did the programmer die in the shower? AHA jokes! A: He read the shampoo bottle instructions: Lather. Rinse. Repeat.
31. #5 Strings
32. #6 Formatting strings #7 Things with strings
33. #8 List, #9 Tuples • List are mutable • Tuples are not mutable • List comprehension
34. #9 Functional programming https://docs.python.org/2/library/functions.html
35. #10 Generators A billion iterations for a generator is Nothing! ! - pydanny
37. #11 Dictionaries Mutable key/value objects
38. #12 Isolate Environments
39. #13 Work with JSON import json
40. #15: Serve the web I know everyone likes this part. [makes me sad :’( though]
41. And many many many more web frameworks…
42. End la Earvin Gemenez @tomomoii