What is the purpose of the 'with' statement in Python?

What is the purpose of the 'with' statement in Python?

The 'with' statement in Python is used for resource management and exception handling. It ensures that resources are properly managed, like files, by automatically closing them after their block of code is executed.

Can you give me an example of how to use the 'with' statement?

Sure! Here's a simple example:

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

In this example, the file is opened and read, and it will be automatically closed after the block is executed.

What happens if an error occurs inside the 'with' block?

If an error occurs, the 'with' statement will still ensure that the resource is properly cleaned up. The exception will propagate after the resource is released.

Are there other contexts where 'with' can be used?

Yes, the 'with' statement can be used with any object that implements the context management protocol, such as database connections, threading locks, and more.