Python Snippet

Custom Context Manager via contextlib

Difficulty: Medium

`@contextlib.contextmanager` turns a generator into a context manager: code before the `yield` is the setup, the yielded value is bound by `as`, and code after the `yield` is the teardown. It removes most of the class boilerplate when you do not need shared state. This entry covers the basic pattern, exception handling with try/finally, and `contextlib.suppress` as a one-liner.