{"id":929,"date":"2019-04-10T14:08:35","date_gmt":"2019-04-10T11:08:35","guid":{"rendered":"https:\/\/djangostars.com\/blog\/?p=929"},"modified":"2025-09-10T17:17:07","modified_gmt":"2025-09-10T17:17:07","slug":"the-python-celery-cookbook-small-tool-big-possibilities","status":"publish","type":"post","link":"https:\/\/djangostars.com\/blog\/the-python-celery-cookbook-small-tool-big-possibilities\/","title":{"rendered":"The Python Celery Cookbook: Small Tool, Big Possibilities"},"content":{"rendered":"

Everyone in the Python community has heard about Celery at least once, and maybe even already worked with it\u2014especially when navigating Python 2 to 3 migration<\/a> for background workers. In short, it lets you offload scheduled or specialized tasks to separate processes or servers, which boosts Python performance<\/a> while saving time and effort.<\/p>\n

Our tutorial is based on many years of development experience that we have implemented in our projects. Therefore, all information about Celery in this article is based only on real projects.
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An Introduction to the Celery Python Guide<\/h2>\n

Celery tool decreases performance load by running part of the functionality as postponed tasks either on the same server as other tasks, or on a different server. Most commonly, developers use it for sending emails. However, Celery has a lot more to offer. In this article, I\u2019ll show you some Celery basics, as well as a couple of Python-Celery best practices.<\/p>\n

Celery Basics<\/h2>\n

If you have worked with Celery before, feel free to skip this chapter. But if Celery is new to you, here you will learn how to enable Celery<\/a> in your project, and participate in a separate tutorial<\/a> on using Celery with Django. Basically, you need to create a Celery instance and use it to mark Python functions as tasks.
\nIt\u2019s better to create the instance in a separate file, as it will be necessary to run Celery the same way it works with WSGI in Django. For example, if you create two instances, Flask and Celery, in one file in a Flask application and run it, you\u2019ll have two instances, but use only one. It\u2019s the same when you run Celery Python.<\/p>\n

Primary Python Celery Examples<\/h2>\n

As I mentioned before, the go-to case of using Celery is sending email. I will use this example to show you the basics of using Celery. Here\u2019s a quick Celery Python tutorial:
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