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[tox]
isolated_build = True
envlist = py{38,39}-django{20,21,22,30,31,32},py310-django{21,22,30,31,32}
requires =
    tox-poetry-installer[poetry] == 0.8.1
    tox-py == 1.1.0

[tox:.package]
basepython = python3

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git rebase -x 'git reset --soft HEAD~1 && git commit -C HEAD@{1}' -i target_branch_or_commit

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# Block HTTP(S) in test suites
# ============================
#
# Tested with dependencies:
# - Django 1.10-2.x (may work on future versions)
# - future 0.17.1+
# - Python 2.7.x,3.7.x
# - py.test
# - nose

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version: "3.0"
services:
  web:
    volumes:
      - pycharm_helpers_PY-191.7479.30:/opt/.pycharm_helpers

volumes:
  pycharm_helpers_PY-191.7479.30: {}

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# Add the following 'help' target to your Makefile
# And add help text after each target name starting with '\#\#'
 
help:           ## Show this help.
	@fgrep -h "##" $(MAKEFILE_LIST) | fgrep -v fgrep | sed -e 's/\\$$//' | sed -e 's/##//'
 
# Everything below is an example
 
target00:       ## This message will show up when typing 'make help'
	@echo does nothing

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# Confirmed working under:
# -   Python3.7 / Django 2.2 / Django Extensions / IPython Available
# -   Python3.7 / Django 2.2 / Django Extensions / IPython Unavailable
# 
# Notices:
# -   This might even work in PyCharm CE with the python console, but no guarantees there.
# -   There are no language features required that shouldn't be available as far back as python2.6, maybe 2.5.
# -   There are no framework features required that shouldn't be available as far back as Django 1.7
# -   Should still provide basic Django shell when Django Extensions is unavailable.
# -   This is for all of my friends to enjoy!   

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No sqlite? No problem!

CFLAGS="-I$(xcrun --show-sdk-path)/usr/include"

No zlib, but zlib installed? No problem!

CPPFLAGS="-I$(brew --prefix zlib)/include"

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Run:

• brew install gnupg gnupg2 pinentry-mac
• git config --global user.signingkey <key>
• git config --global commit.gpgsign true
• git config --global gpg.program gpg

Followed by:

• nano ~/.gnupg/gpg.conf

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General

• Don't fork to a new branch, it will be impossible to merge back
• If only a handful of developers work on the branch, nobody else is comfortable writing python3 when you're ready to go
• You need to have a two-language compatible codebase

Stages

1. Third-party compatibility first

• No new dependencies without Py3 support

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from decimal import Decimal as D
from numbers import Number

from django.test import TestCase


class Adder(object):
    def __init__(self, addend, augend):
        if not (isinstance(addend, Number) or isinstance(augend, Number)):
            raise TypeError('Adder requires both addend and augend to be Numbers.')