this post was submitted on 13 Jul 2023

9 points (80.0% liked)

Python

6378 readers

110 users here now

Welcome to the Python community on the programming.dev Lemmy instance!

📅 Events

Past

November 2023

PyCon Ireland 2023, 11-12th
PyData Tel Aviv 2023 14th

October 2023

PyConES Canarias 2023, 6-8th
DjangoCon US 2023, 16-20th (!django 💬)

July 2023

PyDelhi Meetup, 2nd
PyCon Israel, 4-5th
DFW Pythoneers, 6th
Django Girls Abraka, 6-7th
SciPy 2023 10-16th, Austin
IndyPy, 11th
Leipzig Python User Group, 11th
Austin Python, 12th
EuroPython 2023, 17-23rd
Austin Python: Evening of Coding, 18th
PyHEP.dev 2023 - "Python in HEP" Developer's Workshop, 25th

August 2023

PyLadies Dublin, 15th
EuroSciPy 2023, 14-18th

September 2023

PyData Amsterdam, 14-16th
PyCon UK, 22nd - 25th

🐍 Python project:

💓 Python Community:

#python IRC for general questions
#python-dev IRC for CPython developers
PySlackers Slack channel
Python Discord server
Python Weekly newsletters
Mailing lists
Forum

✨ Python Ecosystem:

🌌 Fediverse

Communities

#python on Mastodon
c/django on programming.dev
c/pythorhead on lemmy.dbzer0.com

Projects

Pythörhead: a Python library for interacting with Lemmy
Plemmy: a Python package for accessing the Lemmy API
pylemmy pylemmy enables simple access to Lemmy's API with Python
mastodon.py, a Python wrapper for the Mastodon API

Feeds

founded 1 year ago

MODERATORS

erlingur@programming.dev

jnovinger@programming.dev

norambna@programming.dev

9

Python interfaces: abandon ABC and switch to Protocols (levelup.gitconnected.com)

submitted 1 year ago by rwnobrega@lemmy.world to c/python@programming.dev

10 comments fedilink hide all child comments

you are viewing a single comment's thread
view the rest of the comments

[–] plistig@feddit.de 3 points 1 year ago* (last edited 1 year ago) (1 children)

Abc and Protocols are not the same, though. The protocol is met when all methods are implemented with the expected signature. Abstract base classes require you to opt in to be considered an Implementation of some interface. Both have different use cases. Protocols are much more fragile.

[–] riskable@programming.dev 1 points 1 year ago (1 children)

I wouldn't say Protocols are more "fragile"... They're more strict.

[–] plistig@feddit.de 1 points 1 year ago

The opposite is true. If you have two interfaces that contain methods with the same name, then they have the same typing.Protocol. It is not possible to specify preconditions or contracts, as you would with abc.