effect VS Deal

Compare effect vs Deal and see what are their differences.


effect isolation in Python, to facilitate more purely functional code (by python-effect)
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effect Deal
0 2
334 281
0.3% 7.8%
1.1 9.5
5 months ago 18 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.


Posts with mentions or reviews of effect. We have used some of these posts to build our list of alternatives and similar projects.

We haven't tracked posts mentioning effect yet.
Tracking mentions began in Dec 2020.


Posts with mentions or reviews of Deal. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2021-03-10.
  • Design By Contract
    1 project | reddit.com/r/Python | 22 Dec 2021
    Have you used Design by Contract in Python projects before? I know that it isn't a first class feature of the language but I see some libraries out there (this one seems potentially promising). Just wondering what the pros and cons are when it comes to gluing DBC onto Python and if anyone can give a yea or nay to it.
  • Make tests a part of your app
    4 projects | dev.to | 10 Mar 2021
    deal is a library for Design-by-Contract.

What are some alternatives?

When comparing effect and Deal you can also consider the following projects:

fn.py - Functional programming in Python: implementation of missing features to enjoy FP

Toolz - A functional standard library for Python.

Coconut - Simple, elegant, Pythonic functional programming.

returns - Make your functions return something meaningful, typed, and safe!

funcy - A fancy and practical functional tools

CyToolz - Cython implementation of Toolz: High performance functional utilities

Pyrsistent - Persistent/Immutable/Functional data structures for Python