attrs VS urllib3

Compare attrs vs urllib3 and see what are their differences.

urllib3

urllib3 is a user-friendly HTTP client library for Python (by urllib3)
Our great sponsors
  • InfluxDB - Power Real-Time Data Analytics at Scale
  • WorkOS - The modern identity platform for B2B SaaS
  • SaaSHub - Software Alternatives and Reviews
attrs urllib3
11 21
5,074 3,664
0.9% 0.9%
9.1 9.1
2 days ago 13 days ago
Python Python
MIT License MIT License
The number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.

attrs

Posts with mentions or reviews of attrs. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2023-08-29.
  • Litestar 2.0
    4 projects | /r/Python | 29 Aug 2023
    Full support for validation and serialisation of attrs classes and msgspec Structs. Where previously only Pydantic models and types where supported, you can now mix and match any of these three libraries. In addition to this, adding support for another modelling library has been greatly simplified with the new plugin architecture
  • Ask HN: How can I get better at writing production-level Python?
    9 projects | news.ycombinator.com | 18 Jul 2023
  • Starlite updates March '22 | 2.0 is coming
    14 projects | /r/Python | 26 Mar 2023
    Pydantic is by far not the only library of its kind, with prominent members of the same class being attrs, cattrs or even plain dataclasses for some use cases.
  • Data Classification: Does Python still have a need for class without dataclass?
    2 projects | news.ycombinator.com | 14 Feb 2023
    Anything requiring e.g. setattr, getattr, delattr? Without looking far,

    https://github.com/python-attrs/attrs/blob/main/src/attr/_ma...

  • What new Python features are the most useful for you?
    2 projects | news.ycombinator.com | 19 Jan 2023
  • Why you should use Data Classes in Python
    2 projects | /r/Python | 16 Sep 2022
  • Python Built-In Functions to Know
    2 projects | news.ycombinator.com | 10 Mar 2022
    I was looking for an example of using locals() to "fill a data class from kwargs" or something similar to that. The example here doesn't use locals().

    That aside, I generally wouldn't use the kwargs approach shown in this example either. I'd use [dataclasses](https://docs.python.org/3/library/dataclasses.html ) or [attrs](https://www.attrs.org/) instead.

  • Building a Micro Business: What Services I Pay For
    16 projects | dev.to | 30 Dec 2021
    hynek: developer of attrs
  • Soap and REST at Odds (2017)
    1 project | news.ycombinator.com | 3 Aug 2021
    I continue to be surprised how easy it can be to consume a SOAP API with the right client libraries. Such as https://docs.python-zeep.org/en/master/ for Python. Now that's not to say it will always work, you can design a terrible API with any mechanism, no SOAP or REST client will help you if the other end has desided to succumb to madness and done something like turn their entire API into just "two endpoints" and driven by the payload content you post to the inbound endpoint, and you have to sit there polling the outbound endpoint with the inbound endpoints response ID because to find out what the eventual response is...

    But horror story aside, consuming a decent SOAP endpoint with a good client library can be practically magical.

    Between attrs (https://www.attrs.org/), cattrs (https://cattrs.readthedocs.io/), and the aforementioned zeep soap client I've got a serialisation pipeline from soap endpoint into an attrs dataclass with type hints and basic type validation down to a snippet so small it fits right here (type hints removed to minimise size).

      from zeep import helpers
  • PEP 661 -- Sentinel Values
    6 projects | /r/Python | 6 Jun 2021
    attrs has at least two.

urllib3

Posts with mentions or reviews of urllib3. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2024-04-02.
  • Python Cloudflare Workers
    4 projects | news.ycombinator.com | 2 Apr 2024
    As opposed to what the article says, urllib3 now has experimental support for browser as of Jan 30th.

    Source: https://github.com/urllib3/urllib3/releases/tag/2.2.0

  • Revived the promise made six years ago for Requests 3
    4 projects | dev.to | 2 Apr 2024
    Then, I tried to get a firm grip on urllib3 base code, contributing this and there until I was ready to kick things up with a proof of concept that would have put urllib3 far ahead. Without any breaking changes. I was delusional. This was a bit of a shock, but six months passed between my initial kick off and my formal give up, and here's why in a nutshell:
  • Python HTTP library 'urllib3' now works in the browser
    8 projects | news.ycombinator.com | 30 Jan 2024
    Oh wow, thanks for this story! Would love to hear more if you have time :) Good luck with testing it out.

    Note that we found an issue w/ emitting an InsecureRequestWarning by default. The request is perfectly secure, it's just we aren't telling the ConnectionPool that information (see: https://github.com/urllib3/urllib3/issues/3331)

  • Bounties Damage Open Source Projects
    4 projects | news.ycombinator.com | 17 Sep 2023
    I've had a good experience doing a couple of bug fix bounties for urllib3 https://github.com/urllib3/urllib3/issues . I'd be interested in how the maintainers how found running the bug bounty and if it's given them more useful fixes or if it just adds more noise to deal with
  • Help: Installing AI LLM for first time and having SSL issue
    1 project | /r/commandline | 6 May 2023
    ImportError: urllib3 v2.0 only supports OpenSSL 1.1.1+, currently the 'ssl' module is compiled with LibreSSL 2.8.3. See: https://github.com/urllib3/urllib3/issues/2168
  • ReadTheDocs Sphinx theme urllib3 related build errors
    2 projects | /r/technicalwriting | 5 May 2023
    > Could not import extension sphinx.builders.linkcheck (exception: urllib3 v2.0 only supports OpenSSL 1.1.1+, currently the 'ssl' module is compiled with OpenSSL 1.0.2n 7 Dec 2017. See: https://github.com/urllib3/urllib3/issues/2168)
  • Trying to install autoscan from https://github.com/NiNiyas/autoscan and stuck with no idea what the problem is.
    6 projects | /r/PleX | 5 Mar 2023
    This error is coming from Python, it's telling us Python is failing to import the urllib3 library, these lines here are important:
  • Requests Library in Python
    2 projects | dev.to | 18 Jul 2022
    Requests allows you to send HTTP/1.1 requests extremely easily. There’s no need to manually add query strings to your URLs, or to form-encode your POST data. Keep-alive and HTTP connection pooling are 100% automatic, thanks to urllib3.
  • GitHub - Spacewalkio/Goenv: 🐺 Manage Your Applications Go Environment.
    5 projects | /r/golang | 12 Jul 2022
    Judging projects based on stars is really immature. for example everyone knows requests https://github.com/psf/requests the python package that is used in every python project out there. it has 47k star too WOW. but the thing that less people know is urllib3. https://github.com/urllib3/urllib3. it has only 3k stars. It basically does the heavy lifting for requests!!
  • This Week In Python
    5 projects | dev.to | 23 Jun 2022
    urllib3 – Python HTTP library with thread-safe connection pooling, file post support, user friendly, and more

What are some alternatives?

When comparing attrs and urllib3 you can also consider the following projects:

itsdangerous - Safely pass trusted data to untrusted environments and back.

requests - A simple, yet elegant, HTTP library.

transitions - A lightweight, object-oriented finite state machine implementation in Python with many extensions

httplib2 - Small, fast HTTP client library for Python. Features persistent connections, cache, and Google App Engine support. Originally written by Joe Gregorio, now supported by community.

pluginbase - A simple but flexible plugin system for Python.

pycurl - PycURL - Python interface to libcurl

Pychievements - The Python Achievements Framework!

grequests - Requests + Gevent = <3

Throttler - 🔀⏳ Easy throttling with asyncio support

Uplink - A Declarative HTTP Client for Python

blinker - A fast Python in-process signal/event dispatching system.

requests-futures - Asynchronous Python HTTP Requests for Humans using Futures