What are the best practices for using context managers in Python?

What are the best practices for using context managers in Python?

Some best practices include using context managers for resource management, ensuring proper cleanup, and nesting them when necessary.

Can you give me an example of a context manager in action?

Sure! Here's a simple example:

with open('file.txt', 'r') as file:
    data = file.read()

This automatically closes the file after reading.

What should I avoid when using context managers?

Avoid using context managers for operations that don't require resource management, as it can lead to unnecessary complexity.

Are there any built-in context managers I should know about?

Yes! The open() function is a common built-in context manager, and you can also use threading.Lock() for thread synchronization.