Python’s Context Managers Explained with Two Instructive Examples

All you need to know about the magic methods and the @contextmanager decorator.

Have you ever seen a line such as with something(...) as s: in someone’s Python code and wondered what that is all about? Or maybe you already know how to use the with statement, and would like to learn how to create your own types of objects which support this syntax? Worry not, you’ve come to the right place. In this article I will explain what Python context managers are good for, how…