What are some common mistakes when using context managers in Python?

What are some common mistakes when using context managers in Python?

Some common mistakes include not properly handling exceptions, nesting context managers incorrectly, and forgetting to close resources.

Can you explain why forgetting to close resources is a mistake?

Forgetting to close resources can lead to memory leaks and resource exhaustion, which can degrade performance or crash your application.

What is the correct way to nest context managers?

You should use the with statement for each context manager, or use a single with statement with multiple context managers separated by commas.

Are there any best practices for using context managers?

Yes, always ensure that your context managers are properly scoped, handle exceptions gracefully, and prefer using built-in context managers when possible.