What are some examples of using contextlib in Python?

Can you explain what contextlib is in Python?

Contextlib is a module in Python that provides utilities for working with context managers, which are used to manage resources.

What are some common use cases for contextlib?

Common use cases include managing file streams, database connections, and ensuring cleanup actions are performed.

Can you give me an example of using contextlib to create a context manager?

Sure! You can use contextlib.contextmanager to create a simple context manager like this:

from contextlib import contextmanager

@contextmanager
def my_context():
    print('Entering the context')
    yield
    print('Exiting the context')

How does the yield statement work in that example?

The yield statement allows you to pause the function and return control to the caller, resuming after the context block.