Having too many custom exceptions on a project can be a pain, but a few choices are nice. The problem... (more…)

Understanding iterators is a milestone for any serious Pythonista. With this step-by-step tutorial you’ll understanding class-based iterators in Python, completely from scratch. (more…)

How to retry a code block until no exception is raised? Simple and elegant solution. (more…)

In this tutorial, you'll learn how to add time delays to your Python programs. You'll use decorators and the built-in time module to add Python sleep() calls to your code. Then, you'll discover how time delays work with threads, asynchronous functions, an... (more…)

TL;DR: Scale your existing asyncio application to thousands of cores with 20 lines of code. Ray added two features to enable seamless… (more…)