Use contextlib.closing to Handle "Legacy" Resources

Python''s context managers (with statement) are very handy at handling resources. (You see way less finally in Python code due to them). Maybe objects in Python can be used as context mangers - files, locks, database drivers and more. But some objects still do not.

To handle these "legacy" objects you can use contextlib.closing function which will return a context manager that will call obj.close() once the context manager exists.

Here''s an example of using contextlib.closing with sockets. We''ll be doing a simple HTTP request (Yeah, you should probably use requests or urlopen - this is just an example :)

Note also the user of iter with sentinel to read chunks up to 1K from the socket.