How do context managers work in Python?

Can you explain how context managers work in Python?

Sure! Context managers in Python are used to manage resources, ensuring they are properly acquired and released. They are commonly used with the with statement.

What is the purpose of the with statement?

The with statement simplifies exception handling by encapsulating common preparation and cleanup tasks. It ensures that resources are released properly, even if an error occurs.

Can you give me an example of a context manager?

Absolutely! A common example is opening a file. Using with open('file.txt') as f: ensures the file is closed automatically after the block is executed.

How do I create a custom context manager?

You can create a custom context manager by defining a class with __enter__ and __exit__ methods, or by using the contextlib module's contextmanager decorator.