Tox with pytest, coverage, flake8, and django

settings.py

SECRET_KEY = 'super-secret-key'

INSTALLED_APPS = [
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    'yourproject',
]

DATABASES = {
    'default': {
        'ENGINE': 'django.db.backends.sqlite3',
        'NAME': 'testdb.sqlite3',
    }
}

tox.ini

[tox]
envlist=
    py34-django{111,20},
    py35-django{111,20},
    py36-django{111,20},

[testenv]
changedir=
    yourproject/tests
deps =
    psycopg2
    pytest
    pytest-django
    pytest-flake8
    pytest-cov
    django111: django>=1.11,<1.12
    django20: django>=2.0,<2.1
commands =
    pytest --flake8 --cov=yourproject {posargs}

[pytest]
DJANGO_SETTINGS_MODULE = yourproject.tests.settings
python_files = test_*.py
flake8-max-line-length = 99
flake8-ignore =
    .git ALL
    __pycache__ ALL
    .ropeproject ALL
    */migrations ALL
    manage.py ALL