This is an implementation of PEP 557, Data Classes.

Overview

This is an implementation of PEP 557, Data Classes. It is a backport for Python 3.6. Because dataclasses will be included in Python 3.7, any discussion of dataclass features should occur on the python-dev mailing list at https://mail.python.org/mailman/listinfo/python-dev. At this point this repo should only be used for historical purposes (it's where the original dataclasses discussions took place) and for discussion of the actual backport to Python 3.6.

See https://www.python.org/dev/peps/pep-0557/ for the details of how Data Classes work.

A test file can be found at https://github.com/ericvsmith/dataclasses/blob/master/test/test_dataclasses.py, or in the sdist file.

Installation

pip install dataclasses

Example Usage

from dataclasses import dataclass

@dataclass
class InventoryItem:
    name: str
    unit_price: float
    quantity_on_hand: int = 0

    def total_cost(self) -> float:
        return self.unit_price * self.quantity_on_hand

item = InventoryItem('hammers', 10.49, 12)
print(item.total_cost())

Some additional tools can be found in dataclass_tools.py, included in the sdist.

Compatibility

This backport assumes that dict objects retain their insertion order. This is true in the language spec for Python 3.7 and greater. Since this is a backport to Python 3.6, it raises an interesting question: does that guarantee apply to 3.6? For CPython 3.6 it does. As of the time of this writing, it's also true for all other Python implementations that claim to be 3.6 compatible, of which there are none. Any new 3.6 implementations are expected to have ordered dicts. See the analysis at the end of this email:

https://mail.python.org/pipermail/python-dev/2017-December/151325.html

As of version 0.4, this code no longer works with Python 3.7. For 3.7, use the built-in dataclasses module.

Release History

Version Date Description
0.8 2020-11-13 Fix ClassVar in .replace()
0.7 2019-10-20 Require python 3.6 only
0.6 2018-05-17 Equivalent to Python 3.7.0rc1
0.5 2018-03-28 Equivalent to Python 3.7.0b3
Owner
Eric V. Smith
Eric V. Smith
XlvnsScriptTool - Tool for decompilation and compilation of scripts .SDT from the visual novel's engine xlvns

XlvnsScriptTool English Dual languaged (rus+eng) tool for decompiling and compiling (actually, this tool is more than just (dis)assenbler, but less th

Tester 3 Sep 15, 2022
An AddOn storing wireguard configuration

Wireguard Database Connector Overview Development Status: 0.1.7 (alpha) First of all, I'd like to thank Jared McKnight for wireguard who inspired me t

Markus Neubauer 3 Dec 30, 2021
Source-o-grapher is a tool built with the aim to investigate software resilience aspects of Open Source Software (OSS) projects.

Source-o-grapher is a tool built with the aim to investigate software resilience aspects of Open Source Software (OSS) projects.

Aristotle University 5 Jun 28, 2022
Backend/API for the Mumble.dev, an open source social media application.

Welcome to the Mumble Api Repository Getting Started If you are trying to use this project for the first time, you can get up and running by following

Dennis Ivy 189 Dec 27, 2022
This repository is an archive of emails that are sent by the awesome Quincy Larson every week.

Awesome Quincy Larson Email Archive This repository is an archive of emails that are sent by the awesome Quincy Larson every week. If you fi

Sourabh Joshi 912 Jan 05, 2023
A basic tic tac toe game on python!

A basic tic tac toe game on python!

Shubham Kumar Chandrabansi 1 Nov 18, 2021
A python program with an Objective-C GUI for building and booting OpenCore on both legacy and modern Macs

A python program with an Objective-C GUI for building and booting OpenCore on both legacy and modern Macs, see our in-depth Guide for more information.

dortania 4.7k Jan 02, 2023
UF3: a python library for generating ultra-fast interatomic potentials

Ultra-Fast Force Fields (UF3) S. R. Xie, M. Rupp, and R. G. Hennig, "Ultra-fast interpretable machine-learning potentials", preprint arXiv:2110.00624

Ultra-Fast Force Fields 24 Nov 13, 2022
Nicotine+: A graphical client for the SoulSeek peer-to-peer system

Nicotine+ Nicotine+ is a graphical client for the Soulseek peer-to-peer file sharing network. Nicotine+ aims to be a pleasant, Free and Open Source (F

940 Jan 03, 2023
Tools, guides, and resources for blockchain analysts to interface with data on the Ergo platform.

Ergo Intelligence Objective Provide a suite of easy-to-use toolkits, guides, and resources for blockchain analysts and data scientists to quickly unde

Chris 5 Mar 15, 2022
Poetry workspace plugin for Python monorepos.

poetry-workspace-plugin Poetry workspace plugin for Python monorepos. Inspired by Yarn Workspaces. Adds a new subcommand group, poetry workspace, whic

Jack Smith 74 Jan 01, 2023
Hexa is an advanced browser.It can carry out all the functions present in a browser.

Hexa is an advanced browser.It can carry out all the functions present in a browser.It is coded in the language Python using the modules PyQt5 and sys mainly.It is gonna get developed more in the fut

1 Dec 10, 2021
Github Star Tracking app with Streamlit

github-star-tracking-python-app Github Star Tracking app with Streamlit #8daysofstreamlit How to run it locally? Clone or Download & Unzip the Repo En

amrrs 4 Sep 22, 2022
An integrated library for checking email if it is registered on social media

An integrated library for checking email if it is registered on social media

Sidra ELEzz 13 Dec 08, 2022
A bunch of codes for procedurally modeling and texturing futuristic cities.

Procedural Futuristic City This is our final project for CPSC 479. We created a procedural futuristic city complete with Worley noise procedural textu

1 Dec 22, 2021
Just RESTing

petnica-api-workshop Just RESTing Setup Using pipenv You can setup this project with pipenv if you want isolated libraries. After you've installed pip

Aleksa Tešić 1 Oct 23, 2021
A collection of some leetcode challenges in python and JavaScript

Python and Javascript Coding Challenges Some leetcode questions I'm currently working on to open up my mind to better ways of problem solving. Impleme

Ted Ngeene 1 Dec 20, 2021
Python script for diving image data to train test and val

dataset-division-to-train-val-test-python python script for dividing image data to train test and val If you have an image dataset in the following st

Muhammad Zeeshan 1 Nov 14, 2022
Generates Windows 95 and 95 OEM keys using the modulus 7 check algorithm

w95keygen-python windowskeygen.py - Generates Windows 95 and 95 OEM keys using the modulus 7 check algorithm Just download and drop in the directory y

Joshua Alto 1 Dec 06, 2021
Would upload anything I do with/related to brainfuck

My Brainfu*k Repo Basically wanted to create something with Brainfu*k but realized that with the smol brain I have, I need to see the cell values real

Rafeed 1 Mar 22, 2022