How do context managers help with error handling in Python?

How do context managers help with error handling in Python?

Context managers in Python simplify resource management and error handling by ensuring that resources are properly cleaned up.

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

Sure! Here's a simple example using the with statement to open a file:

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

This ensures the file is closed automatically, even if an error occurs.

What happens if an error occurs while reading the file?

If an error occurs, the context manager will still ensure that the file is closed properly, preventing resource leaks.

Are there any built-in context managers in Python?

Yes, Python has several built-in context managers, such as open(), threading.Lock(), and sqlite3.connect(), which manage resources effectively.