Context Managers are one of the core language features that make Python unique. The
with statement allows developers to write a common programming pattern in a concise and readable way. The following indented block gives a visual cue and make understanding the code easier. Understanding Context Managers is key to understanding the idea of Pythonic code.
Context Managers are usually used for allocation and releasing of resources, but that is not their only use-case. They are useful for factoring out common setup and teardown code, or any pair of operations that need to be performed before or after a procedure.
In this article, I will present some interesting real-world examples of their use, and hopefully encourage budding Pythonistas to explore them.