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‎.env/.dev-sample

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DEBUG=1
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SECRET_KEY=dbaa1_i7%*3r9-=z-+_mz4r-!qeed@(-a_r(g@k8jo8y3r27%m
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DJANGO_ALLOWED_HOSTS=*
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SQL_ENGINE=django.db.backends.postgresql
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SQL_DATABASE=hello_django_dev
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SQL_USER=hello_django
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SQL_PASSWORD=hello_django
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SQL_HOST=db
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SQL_PORT=5432
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CELERY_BROKER=redis://redis:6379/0
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CELERY_BACKEND=redis://redis:6379/0

‎.gitignore

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__pycache__
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env
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*.sqlite3
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celerybeat-schedule
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celerybeat.pid
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celery.log
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.coverage
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htmlcov

‎compose/local/django/Dockerfile

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FROM python:3.9-slim-buster
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ENV PYTHONUNBUFFERED 1
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ENV PYTHONDONTWRITEBYTECODE 1
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RUN apt-get update \
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# dependencies for building Python packages
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&& apt-get install -y build-essential \
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# psycopg2 dependencies
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&& apt-get install -y libpq-dev \
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# Translations dependencies
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&& apt-get install -y gettext \
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# cleaning up unused files
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&& apt-get purge -y --auto-remove -o APT::AutoRemove::RecommendsImportant=false \
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&& rm -rf /var/lib/apt/lists/*
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# Requirements are installed here to ensure they will be cached.
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COPY ./requirements.txt /requirements.txt
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RUN pip install -r /requirements.txt
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COPY ./compose/local/django/entrypoint /entrypoint
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RUN sed -i 's/\r$//g' /entrypoint
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RUN chmod +x /entrypoint
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COPY ./compose/local/django/start /start
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RUN sed -i 's/\r$//g' /start
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RUN chmod +x /start
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COPY ./compose/local/django/celery/worker/start /start-celeryworker
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RUN sed -i 's/\r$//g' /start-celeryworker
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RUN chmod +x /start-celeryworker
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COPY ./compose/local/django/celery/beat/start /start-celerybeat
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RUN sed -i 's/\r$//g' /start-celerybeat
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RUN chmod +x /start-celerybeat
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COPY ./compose/local/django/celery/flower/start /start-flower
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RUN sed -i 's/\r$//g' /start-flower
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RUN chmod +x /start-flower
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WORKDIR /app
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ENTRYPOINT ["/entrypoint"]

‎compose/local/django/celery/beat/start

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#!/bin/bash
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set -o errexit
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set -o nounset
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rm -f './celerybeat.pid'
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celery -A django_celery_example beat -l INFO

‎compose/local/django/celery/flower/start

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#!/bin/bash
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set -o errexit
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set -o nounset
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worker_ready() {
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celery -A django_celery_example inspect ping
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}
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until worker_ready; do
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>&2 echo 'Celery workers not available'
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sleep 1
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done
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>&2 echo 'Celery workers is available'
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flower \
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--app=django_celery_example \
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--broker="${CELERY_BROKER}"

‎compose/local/django/celery/worker/start

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#!/bin/bash
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set -o errexit
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set -o nounset
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celery -A django_celery_example worker -l INFO

‎compose/local/django/entrypoint

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#!/bin/bash
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# if any of the commands in your code fails for any reason, the entire script fails
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set -o errexit
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# fail exit if one of your pipe command fails
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set -o pipefail
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# exits if any of your variables is not set
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set -o nounset
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postgres_ready() {
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python << END
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import sys
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import psycopg2
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try:
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psycopg2.connect(
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dbname="${SQL_DATABASE}",
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user="${SQL_USER}",
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password="${SQL_PASSWORD}",
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host="${SQL_HOST}",
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port="${SQL_PORT}",
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)
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except psycopg2.OperationalError:
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sys.exit(-1)
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sys.exit(0)
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END
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}
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until postgres_ready; do
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>&2 echo 'Waiting for PostgreSQL to become available...'
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sleep 1
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done
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>&2 echo 'PostgreSQL is available'
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exec "$@"

‎compose/local/django/start

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#!/bin/bash
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set -o errexit
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set -o pipefail
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set -o nounset
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python manage.py migrate
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python manage.py runserver 0.0.0.0:8000

‎django_celery_example/__init__.py

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from __future__ import absolute_import, unicode_literals
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# This will make sure the app is always imported when
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# Django starts so that shared_task will use this app.
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from .celery import app as celery_app
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__all__ = ('celery_app',)

‎django_celery_example/asgi.py

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"""
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ASGI config for django_celery_example project.
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It exposes the ASGI callable as a module-level variable named ``application``.
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For more information on this file, see
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https://docs.djangoproject.com/en/3.1/howto/deployment/asgi/
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"""
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import os
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from django.core.asgi import get_asgi_application
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os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'django_celery_example.settings')
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application = get_asgi_application()

‎django_celery_example/celery.py

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"""
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Celery config file
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https://docs.celeryproject.org/en/stable/django/first-steps-with-django.html
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"""
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from __future__ import absolute_import
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import os
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import time
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from celery import Celery
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from django.conf import settings
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# this code copied from manage.py
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# set the default Django settings module for the 'celery' app.
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os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'django_celery_example.settings')
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# you change change the name here
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app = Celery("django_celery_example")
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# read config from Django settings, the CELERY namespace would make celery
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# config keys has `CELERY` prefix
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app.config_from_object('django.conf:settings', namespace='CELERY')
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# load tasks.py in django apps
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app.autodiscover_tasks(lambda: settings.INSTALLED_APPS)
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@app.task
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def add(x, y):
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time.sleep(5)
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return x / y

‎django_celery_example/settings.py

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"""
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Django settings for django_celery_example project.
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Generated by 'django-admin startproject' using Django 3.1.4.
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For more information on this file, see
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https://docs.djangoproject.com/en/3.1/topics/settings/
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For the full list of settings and their values, see
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https://docs.djangoproject.com/en/3.1/ref/settings/
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"""
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import os
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from pathlib import Path
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# Build paths inside the project like this: BASE_DIR / 'subdir'.
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BASE_DIR = Path(__file__).resolve().parent.parent
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# Quick-start development settings - unsuitable for production
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# See https://docs.djangoproject.com/en/3.1/howto/deployment/checklist/
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# SECURITY WARNING: keep the secret key used in production secret!
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SECRET_KEY = '7vu00+58u%2xj&67%pkymsm1s@im&80ixkmkidfn-iqz!9dy8&'
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# SECURITY WARNING: don't run with debug turned on in production!
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DEBUG = True
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ALLOWED_HOSTS = []
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# Application definition
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INSTALLED_APPS = [
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'django.contrib.admin',
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'django.contrib.auth',
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'django.contrib.contenttypes',
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'django.contrib.sessions',
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'django.contrib.messages',
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'django.contrib.staticfiles',
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]
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MIDDLEWARE = [
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'django.middleware.security.SecurityMiddleware',
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'django.contrib.sessions.middleware.SessionMiddleware',
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'django.middleware.common.CommonMiddleware',
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'django.middleware.csrf.CsrfViewMiddleware',
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'django.contrib.auth.middleware.AuthenticationMiddleware',
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'django.contrib.messages.middleware.MessageMiddleware',
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'django.middleware.clickjacking.XFrameOptionsMiddleware',
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]
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ROOT_URLCONF = 'django_celery_example.urls'
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TEMPLATES = [
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{
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'BACKEND': 'django.template.backends.django.DjangoTemplates',
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'DIRS': [],
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'APP_DIRS': True,
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'OPTIONS': {
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'context_processors': [
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'django.template.context_processors.debug',
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'django.template.context_processors.request',
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'django.contrib.auth.context_processors.auth',
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'django.contrib.messages.context_processors.messages',
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],
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},
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},
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]
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WSGI_APPLICATION = 'django_celery_example.wsgi.application'
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# Database
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# https://docs.djangoproject.com/en/3.1/ref/settings/#databases
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DATABASES = {
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"default": {
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"ENGINE": os.environ.get("SQL_ENGINE", "django.db.backends.sqlite3"),
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"NAME": os.environ.get("SQL_DATABASE", os.path.join(BASE_DIR, "db.sqlite3")),
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"USER": os.environ.get("SQL_USER", "user"),
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"PASSWORD": os.environ.get("SQL_PASSWORD", "password"),
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"HOST": os.environ.get("SQL_HOST", "localhost"),
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"PORT": os.environ.get("SQL_PORT", "5432"),
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}
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}
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# Password validation
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# https://docs.djangoproject.com/en/3.1/ref/settings/#auth-password-validators
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AUTH_PASSWORD_VALIDATORS = [
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{
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'NAME': 'django.contrib.auth.password_validation.UserAttributeSimilarityValidator',
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},
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{
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'NAME': 'django.contrib.auth.password_validation.MinimumLengthValidator',
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},
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{
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'NAME': 'django.contrib.auth.password_validation.CommonPasswordValidator',
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},
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{
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'NAME': 'django.contrib.auth.password_validation.NumericPasswordValidator',
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},
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]
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# Internationalization
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# https://docs.djangoproject.com/en/3.1/topics/i18n/
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LANGUAGE_CODE = 'en-us'
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TIME_ZONE = 'UTC'
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USE_I18N = True
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USE_L10N = True
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USE_TZ = True
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# Static files (CSS, JavaScript, Images)
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# https://docs.djangoproject.com/en/3.1/howto/static-files/
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STATIC_URL = '/static/'
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CELERY_BROKER_URL = os.environ.get("CELERY_BROKER", "redis://127.0.0.1:6379/0")
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CELERY_RESULT_BACKEND = os.environ.get("CELERY_BACKEND", "redis://127.0.0.1:6379/0")

‎django_celery_example/urls.py

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"""django_celery_example URL Configuration
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The `urlpatterns` list routes URLs to views. For more information please see:
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https://docs.djangoproject.com/en/3.1/topics/http/urls/
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Examples:
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Function views
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1. Add an import: from my_app import views
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2. Add a URL to urlpatterns: path('', views.home, name='home')
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Class-based views
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1. Add an import: from other_app.views import Home
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2. Add a URL to urlpatterns: path('', Home.as_view(), name='home')
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Including another URLconf
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1. Import the include() function: from django.urls import include, path
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2. Add a URL to urlpatterns: path('blog/', include('blog.urls'))
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"""
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from django.contrib import admin
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from django.urls import path
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urlpatterns = [
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path('admin/', admin.site.urls),
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]

‎django_celery_example/wsgi.py

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"""
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WSGI config for django_celery_example project.
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It exposes the WSGI callable as a module-level variable named ``application``.
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For more information on this file, see
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https://docs.djangoproject.com/en/3.1/howto/deployment/wsgi/
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"""
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import os
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from django.core.wsgi import get_wsgi_application
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os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'django_celery_example.settings')
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application = get_wsgi_application()

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