Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Features
Speaker Deck
PRO
Sign in
Sign up for free
Search
Search
Python for Java developers
Search
Javier Honduvilla Coto
November 24, 2014
Programming
0
81
Python for Java developers
Javier Honduvilla Coto
November 24, 2014
Tweet
Share
More Decks by Javier Honduvilla Coto
See All by Javier Honduvilla Coto
Debugging – Learning Linux @ Facebook
javierhonduco
0
100
Understanding Ruby with BPF
javierhonduco
1
43
Spying Linux processes
javierhonduco
0
100
word2vec
javierhonduco
0
75
UC3M university cafeteria redesign
javierhonduco
0
88
Mac OSX UI toolkit and design guidelines
javierhonduco
0
120
Other Decks in Programming
See All in Programming
Migration to Signals, Resource API, and NgRx Signal Store
manfredsteyer
PRO
0
120
GC25 Recap: The Code You Reviewed is Not the Code You Built / #newt_gophercon_tour
mazrean
0
110
The Past, Present, and Future of Enterprise Java
ivargrimstad
0
640
alien-signals と自作 OSS で実現する フレームワーク非依存な ロジック共通化の探求 / Exploring Framework-Agnostic Logic Sharing with alien-signals and Custom OSS
aoseyuu
2
660
Six and a half ridiculous things to do with Quarkus
hollycummins
0
210
Vueのバリデーション、結局どれを選べばいい? ― 自作バリデーションの限界と、脱却までの道のり ― / Which Vue Validation Library Should We Really Use? The Limits of Self-Made Validation and How I Finally Moved On
neginasu
2
1.6k
Server Side Kotlin Meetup vol.16: 内部動作を理解して ハイパフォーマンスなサーバサイド Kotlin アプリケーションを書こう
ternbusty
3
250
品質ワークショップをやってみた
nealle
0
640
Domain-centric? Why Hexagonal, Onion, and Clean Architecture Are Answers to the Wrong Question
olivergierke
3
980
実践Claude Code:20の失敗から学ぶAIペアプログラミング
takedatakashi
18
8.7k
Devvox Belgium - Agentic AI Patterns
kdubois
1
150
CSC305 Lecture 08
javiergs
PRO
0
280
Featured
See All Featured
Code Review Best Practice
trishagee
72
19k
No one is an island. Learnings from fostering a developers community.
thoeni
21
3.5k
jQuery: Nuts, Bolts and Bling
dougneiner
65
7.9k
"I'm Feeling Lucky" - Building Great Search Experiences for Today's Users (#IAC19)
danielanewman
230
22k
The Art of Delivering Value - GDevCon NA Keynote
reverentgeek
16
1.7k
Context Engineering - Making Every Token Count
addyosmani
8
300
Save Time (by Creating Custom Rails Generators)
garrettdimon
PRO
32
1.7k
Why Our Code Smells
bkeepers
PRO
340
57k
Testing 201, or: Great Expectations
jmmastey
45
7.7k
The Psychology of Web Performance [Beyond Tellerrand 2023]
tammyeverts
49
3.1k
Java REST API Framework Comparison - PWX 2021
mraible
34
8.9k
Six Lessons from altMBA
skipperchong
29
4k
Transcript
Can I haz ur pythons? Rafael Medina García @rmed_dev Fco.
Javier Honduvilla Coto @javierhonduco
Where is python?
Examples for the Java weenies
Simple TCP Socket: Java
Simple TCP Socket: Python
Reading a file: Java
Reading a file: Python
Hashtable: Java
“Hashtable”: Python
Why python rocks? • Function parameters • GC ◦ Reference
counting • Decorators • Types (WTF) • List-Stack-Queue-[...] • PyPI
Concurrency is not parallelism • Concurrency ◦ GIL: Global Interpreter
Lock (</3) i. threads vs processes • celery ii. tasks iii. groups iv. pipes • cpython, pypy
Celery • Async framework task Queue + Tasks = fun
Cpython and moar • cpython ◦ Guido’s Python Interpreter •
pypy ◦ “an implementation of the Python programming language written in Python itself”
Web frameworks + wsgi • Django • Flask • ∞
Scientific packages • ipython + notebook • cython • numba...
Our fav libs • requests (http for humans) • SQLAlchemy
(database toolkit)
SQLAlchemy I
SQLAlchemy II
Is (c)python slow? • Overhead • Cache misses • Complex
data structures • Any variable can change its type • (dynamic)
None
Bibliography • https://jakevdp.github.io/blog/2014/05/09/why-python-is- slow/ • http://docs.python-requests.org/en/latest/ • https://bitbucket.org/zzzeek/sqlalchemy • http://wsgi.readthedocs.org/en/latest/
• http://www.dabeaz.com/python/UnderstandingGIL.pdf • https://docs.python.org/2/library/gc.html • https://pypi.python.org/pypi • http://pypy.org/ • http://www.scipy.org/