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

Python Type Hints

Sponsored · Your Podcast. Everywhere. Effortlessly. Share. Educate. Inspire. Entertain. You do you. We'll handle the rest. →
Avatar for Ayla Khan Ayla Khan
May 16, 2018
Technology
43
0

Python Type Hints

PyLadies lightning talk about Python type hints

Avatar for Ayla Khan

Ayla Khan

May 16, 2018

More Decks by Ayla Khan

See All by Ayla Khan
Getting started with docker + python
Avatar for Ayla Khan aylakhan
0
23
Productive Bash
Avatar for Ayla Khan aylakhan
1
43
Unit Tests and Mocks: Testing in Python
Avatar for Ayla Khan aylakhan
0
32

Other Decks in Technology

See All in Technology
2026TECHFRESH畢業分享會 - Lightning Talk - 打造精準高效的 MCP 設計模式與測試實務
Avatar for LINE Developers Taiwan line_developers_tw
PRO
0
990
【NRUG vol.18】なぜ多くのオブザーバビリティ導入は失敗するのか
Avatar for NRUG member nrug_member
0
130
Snowflakeと仲良くなる第一歩
Avatar for あべ coco_se
4
470
AAIFに入ってみた ～内から見えるコミュニティ動向～
Avatar for Satoshi Ito sato4
0
210
【セミナー資料】Claude Code をセキュアに使うための考え方と設定の勘どころ / Claude Code Webinar 20260616
Avatar for MasahiroKawahara masahirokawahara
1
290
なぜ Platform Engineering の土台に Kubernetes を選ぶのか
Avatar for Ray r4ynode
2
640
Android の公式 Skill / Android skills
Avatar for Yuki Anzai yanzm
0
140
Bucharest Tech Week 2026 - Reinventing testing practices in the AI era
Avatar for Eric Deandrea edeandrea
PRO
1
160
EventBridge Connection
Avatar for kensh _kensh
5
710
ルールやカスタム機能、どう活かす?ハンズオンで体感するIBM Bobの出力コントロール
Avatar for mu (Mizuho Uehara) muehara
1
160
【Snowflake Summit 2026 Recap!!】Snowflake Summit Deep Dive: Security & Governance
Avatar for Civitaspo civitaspo
0
170
Oracle AI Database@Google Cloud：サービス概要のご紹介
Avatar for oracle4engineer oracle4engineer
PRO
6
1.5k

Featured

See All Featured
Organizational Design Perspectives: An Ontology of Organizational Design Elements
Avatar for Dr. Kim W Petersen kimpetersen
PRO
1
720
The Cost Of JavaScript in 2023
Avatar for Addy Osmani addyosmani
55
10k
Into the Great Unknown - MozCon
Avatar for Noah Learner thekraken
41
2.6k
I Don’t Have Time: Getting Over the Fear to Launch Your Podcast
Avatar for Joe Casabona jcasabona
34
2.8k
What Being in a Rock Band Can Teach Us About Real World SEO
Avatar for Ade Holder 427marketing
0
250
From π to Pie charts
Avatar for Rasagy Sharma rasagy
0
210
Accessibility Awareness
Avatar for Sarah Abderemane sabderemane
1
140
VelocityConf: Rendering Performance Case Studies
Avatar for Addy Osmani addyosmani
333
25k
The SEO identity crisis: Don't let AI make you average
Avatar for Varn varn
0
490
HDC tutorial
Avatar for Michiel Stock michielstock
2
710
We Analyzed 250 Million AI Search Results: Here's What I Found
Avatar for Josh Blyskal joshbly
1
1.4k
AI Search:
Where Are We & What Can We Do About It?
Avatar for Aleyda Solis aleyda
0
7.6k

Transcript

  1. Python (3.5+) Type Hints Using Type Aliases

  2. What Are Python Type Hints? • New in 3.5 (provisional)

    • PEP484 • Optional (not enforced at runtime) ◦ Linter use recommended instead • Function annotations • Type Aliases, NewType, Callable, Generics ...

  3. Type Alias

  4. Type Alias Linting

  5. Type Alias At Runtime

  6. Type Alias

  7. Type Alias At Runtime

  8. Type Alias

  9. Type Alias

  10. Type Alias (Any type, implicit)

  11. Type Alias (Any type, implicit)

  12. Type Hints Advantages • Clarifies, “enforces” intent • Improves readability

    ◦ Simplifies type signatures • Improves testability • May prevent bugs

  13. Type Hints Disadvantages • Lose dynamic typing flexibility • Syntax

    complexity