Single-file Django server

server.py

from django.template.backends.django import DjangoTemplates
from django.core.wsgi import get_wsgi_application
from django.core.management import call_command
from os.path import basename, dirname

from django.shortcuts import render
from django.conf import settings
from django.urls import path


# VIEWS
home = lambda r: render(r, 'home.html')

# URLS
urlpatterns = [
    path('', home, name='home'),
]

# SETTINGS
if not settings.configured:
    FILE = basename(__file__).split('.')[0]
    PATH = dirname(__file__)
    BACKEND = FILE + '.DjangoTemplates'
    settings.configure(
        DEBUG=True,
        MIDDLEWARE_CLASSES=[],
        ROOT_URLCONF=FILE,
        TEMPLATES=[{'BACKEND': BACKEND, 'DIRS': [PATH]}]
    )

if __name__ == '__main__':
    application = get_wsgi_application()
    call_command('runserver', '80')