Upgrade to Pro — share decks privately, control downloads, hide ads and more …

Preparing for the great snakes migration by Hea...

Avatar for Pycon ZA Pycon ZA
October 09, 2020
Programming
110
0

Preparing for the great snakes migration by Heather Williams

A Lightning Talk at PyCon ZA 2020

Avatar for Pycon ZA

Pycon ZA

October 09, 2020

More Decks by Pycon ZA

See All by Pycon ZA
Trio: Structured Concurrency for Python by Jeremy Thurgood
Avatar for Pycon ZA pyconza
0
270
Satellite Data and Super-Resolution to enhance a Slope Soaring Simulator by Schalk Heunis
Avatar for Pycon ZA pyconza
0
190
"Should we just go home on the third Friday afternoon?" by Kim van Wyk
Avatar for Pycon ZA pyconza
0
140
"Dolosse: Distributed Physics Data Acquisition System" by Bertram Losper & Sehlabaka Qhobosheane
Avatar for Pycon ZA pyconza
0
190
Modern JavaScript for Python Developers by Cory Zue
Avatar for Pycon ZA pyconza
0
350
Making Art with Python by Kirk Kaiser
Avatar for Pycon ZA pyconza
0
250
"Posits: A proposed new floating point number format for ML" by Kevin Colville
Avatar for Pycon ZA pyconza
0
170
"Building a label printer using Python, Arduino, duct tape and paperclips" by Johan Beyers
Avatar for Pycon ZA pyconza
0
340
"Building a simple Telegram bot using Python, Flask and Heroku" by Billy Einkamerer
Avatar for Pycon ZA pyconza
0
230

Other Decks in Programming

See All in Programming
AI Engineeringは、AIプロダクトだけのものか？ 〜AIがソフトウェアを作る時代の新しい当たり前〜 / No AI in your product. AI Engineering in your development.
Avatar for r-kagaya rkaga
5
500
freeeにおけるEvalsの実践例の紹介
Avatar for freee freee
PRO
0
130
S3 を使うアプリケーションをローカル完結で動かすことに全力を注いでみた / Running S3 Apps Offline
Avatar for Daisuke Garaike contour_gara
0
560
<title><a id="</title>君はこのHTMLをパースできるか"></a></title> #雑LT_study
Avatar for pizzacat83 pizzacat83
0
170
ドリフトを絶対に許さない（？）CDK運用 / CDK Ops with Zero Tolerance for Drifts (?)
Avatar for アキキー | Akihisa Ikeda akihisaikeda
1
220
生成AI導入の「期待外れ」を乗り越える ー 開発フロー改革が目指す、真の組織変革
Avatar for starfish719 starfish719
0
5k
プロポーザルを書いてもらう
Avatar for pvcresin pvcresin
0
570
メールのエイリアス機能を履き違えない
Avatar for 船長（せんちょう） isshinfunada
0
250
まずはプロンプトガイドを読もう、話はそれからだ
Avatar for Akira TSURUDA kiakiraki
1
170
PostgreSQL 18で考えるUUID主キー
Avatar for Kazuhiro Seo kazuhiro1982
0
490
書籍「プロフェッショナルAI駆動開発」紹介スライド
Avatar for Juntaro Matsumoto juntaromatsumoto
0
250
Claude CodeとAgentCore Gatewayを繋ぐ際の認証認可 / Authentication and authorization when connecting Claude Code with AgentCore Gateway
Avatar for Har1101 har1101
2
350

Featured

See All Featured
Paper Plane (Part 1)
Avatar for Katie Cordina Lindsey katiecoart
PRO
1
10k
Exploring anti-patterns in Rails
Avatar for Elle Meredith aemeredith
3
470
AI: The stuff that nobody shows you
Avatar for John Nunemaker jnunemaker
PRO
9
930
Amusing Abliteration
Avatar for ianozsvald ianozsvald
1
260
Evolution of real-time – Irina Nazarova, EuRuKo, 2024
Avatar for Irina Nazarova irinanazarova
9
1.5k
Building Flexible Design Systems
Avatar for Yesenia Perez-Cruz yeseniaperezcruz
330
40k
Statistics for Hackers
Avatar for Jake VanderPlas jakevdp
799
230k
The innovator’s Mindset - 
Leading Through an Era of Exponential Change - McGill University 2025
Avatar for Jean-Marc De Jonghe jdejongh
PRO
1
270
A brief & incomplete history of 
UX Design for the World Wide Web: 1989–2019
Avatar for Jason CranfordTeague jct
2
480
Why Mistakes Are the Best Teachers: Turning Failure into a Pathway for Growth
Avatar for Umar Saidu Auna auna
0
210
KATA
Avatar for Megan Lloyd mclloyd
PRO
35
15k
A designer walks into a library…
Avatar for Paul Jervis Heath pauljervisheath
211
24k

Transcript

  1. Great snakes migration Upgrading from python 2 to python 3

    By Heather Williams

  2. The Problem • A large codebase • Around 3 000

    python files used to generate questions on a website • Monolith disguised as microservices

  3. Solution: Walled gardens • Make the monolith a true monolith

    • Identify the real microservices • Docker all the things • Walled garden around the python files for questions

  4. Solution: automate it Python 2to3 is a great tool https://docs.python.org/3.0/library/2to3.html

  5. Solution: requirements files • Remove unnecessary dependencies • Upgrade out

    of date dependencies • Note what needs python 3 to upgrade

  6. Great snakes migration Take the plunge and do it!