What are some practical use cases for context managers in Python?

Can you explain what context managers are in Python?

Sure! Context managers in Python are used to manage resources, ensuring they are properly acquired and released.

What are some common use cases for context managers?

Common use cases include file handling, database connections, and managing locks in multithreading.

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

Absolutely! 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 after the block.

Are there any built-in context managers in Python?

Yes, Python has several built-in context managers like open(), threading.Lock(), and sqlite3.connect().