What is the benefit of using `with` when opening files?

Using with when opening files in Python provides the significant benefit of ensuring that the file is properly closed after its suite finishes. This is important because when files are opened in a program, they consume system resources and can lead to resource leaks if not closed correctly. The with statement creates a context manager that handles the opening and closing of the file automatically, even if an error occurs during the file operation. This means that you don't have to explicitly call the close() method; it's done for you, leading to cleaner and more reliable code. The use of with thus simplifies resource management, minimizes the risk of leaving files open inadvertently, and enhances the maintainability of your code.