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mediumDSA

What is a context manager?

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01

Understand the problem

Explain the with statement.

context-manager
02

Attempt it yourself

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03

Study the solution

A context manager defines setup/teardown via __enter__/__exit__ and is used with with, guaranteeing cleanup even on exceptions (e.g. with open(f) as file: closes the file automatically). You can build one with a class or the @contextmanager generator decorator.

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04

Run the code

PYA @contextmanager timer (setup / yield / teardown)
Practice
05

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