Context managers in Python are really useful when dealing with external resources like files, database connections, or network sockets. They ensure that these resources are properly closed or released, even in the presence of exceptions or early returns. By using the 'with' statement, you can have cleaner and more readable code, without worrying about explicitly closing the resources.

Sure! Context managers in Python are objects that follow the 'context management protocol' by implementing the '__enter__' and '__exit__' methods. By using the 'with' statement, you can guarantee that the '__enter__' method is called at the beginning and the '__exit__' method is called at the end, no matter what happens inside the block. This makes it easy to handle resource acquisition and release in a safe and concise manner.

In Python, a context manager is an object that defines the methods '__enter__' and '__exit__', which allow you to manage resources or perform setup and cleanup operations. When a context manager is used with the 'with' statement, the '__enter__' method is called at the beginning, and the '__exit__' method is called at the end of the block. This ensures that the resources are properly managed and released, even if an exception occurs.