What are some real-world examples of context managers in Python?

What are some real-world examples of context managers in Python?

Context managers in Python are used to manage resources efficiently. A common example is file handling using the with statement.

Can you give me a specific code example?

Sure! Here's a simple example:

with open('file.txt', 'r') as file:
    data = file.read()
``` This automatically closes the file after the block.

Are there any other use cases for context managers?

Yes, context managers can also be used for database connections, network connections, and even locking mechanisms in threading.

How do I create my own context manager?

You can create a custom context manager by defining a class with __enter__ and __exit__ methods, or by using the contextlib module.