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

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

Common errors include forgetting to close resources, nesting context managers incorrectly, and using them with incompatible objects.

Can you give an example of forgetting to close a resource?

Sure! If you open a file without a context manager, you might forget to call file.close(), leading to resource leaks.

What about nesting context managers? How can that go wrong?

Nesting can lead to confusion if not done properly. For example, if you don't handle exceptions correctly, it might leave some resources open.

How can I avoid these errors?

Always use with statements for context managers, and consider using try...except blocks to handle exceptions gracefully.