Intro This article demonstrates how to generate ORM & Pydantic models from DDL files with O!MyModels library. With one command or 1 line of code. Library: https://github.com/xnuinside/omymodels I hope it can be useful for you too (but in very rarely cases :))! All code samples (ddl & results) you can find…

In article: BigQuery, pyTelegramBotAPI(telebot), Python 3.7, Poetry, Telegram(https://telegram.org/) Link to the source code at the end of the article. intro Hi, I love investigating new tools and taking a look at different libraries that are created everyday in the Python community. I thought that it would be cool to create some…

Hi! Today I want to share a guide on how to set up integration tests for a bunch of services. Last month I worked on a similar task and for some members of the team the result looked like something new. …

Intro Disclaimer: This article not about ‘better’ way how to define, but about how you can customize SQLAlchemy classes definition. And any classes… On one beautiful day, I played with a pet-project and created some kind of PoC for my idea. I started to define declarative base classes for SQLAlchemy (https://docs.sqlalchemy.org/)…

UPD from 20 July 2020: this article is pretty old and when I write it there was not exist official Docker image so in article I used puckel/docker-airflow. But now, Apache Airflow already created and supported production-ready official docker image. You can read more about it here: https://github.com/apache/airflow/blob/master/IMAGES.rst#airflow-docker-images. I prepared…

Some time ago I was asked by one of my colleges on not difficult question. But looks like, scope of this question not highlighted enough in official documentation. Question was: “How can I get Xcom that pushed by task of another DAG?” If you are here, I think, you know…

This article also can be called: “How to copy dynamically your DAG and add additional task to it?” I described all step-by-step so this article pretty big. If you want the end result — you can scroll down to the article and get the code sources. When you create Airflow…

For some reasons, there is no any quick tutorials (or I am really bad in google) about PostresOperator and a lot of examples how to use for query PostgreSQLHook and PythonOperator. But this is not necessary in each case, because already exists a special operator for PostgreSQL! And it’s very…

UPD from 20 July 2020: this article is pretty old and when I write it there was not exist the official Docker image so in article I used puckel/docker-airflow. But now, Apache Airflow already created and supported production-ready official docker image. You can read more about it here: https://github.com/apache/airflow/blob/master/IMAGES.rst#airflow-docker-images. I…