Python has this idiom for a while now: it's known as a "context manager", also known as the "with" statement. Here's the PEP: http://www.python.org/dev/peps/pep

Python has this idiom for a while now: it's known as a "context manager", also known as the "with" statement. Here's the PEP: http://www.python.org/dev/peps/pep-0343/ http://www.python.org/dev/peps/pep-0343/