[Python-Dev] Iterable sockets? (original) (raw)

Guido van Rossum guido@python.org
Thu, 13 Mar 2003 21:56:42 -0500

>> Line oriented network protocols are very common, and I often find >> myself calling the socket makefile method so I can read complete >> lines from a socket. I'm probably not the first one who's wished >> that socket objects where more file-like. >> >> While I don't think we'd want to go as far as to turn them into a >> stdio based file object, it might make sense to allow them to be >> iterated over (and add a .readline() method, I guess). This would >> necessitate adding some input buffering, which will complicate >> things like the .recv() method, so I'm not sure it's that good an >> idea, but it removes one gotchya for neophytes (and forgetful >> veterans). Thoughts? > >Um, why doesn't the makefile() method do what you want?

The short answer is that it does, but not very tidily - by turning the socket object into a file object, I lose the original socket object functionality (for example, shutdown()).

You can just keep the socket around though.

At another level, the concept of a "file-like" object is a very common python idiom - socket is the odd one out these days.

It's really not a big deal - we could regularise the interface at the cost of more implementation complexity.

I'm not sure if I'd call that regularizing. It would by necessity become some kind of odd mixture. In any case, I find the file abstraction a bit arcane too. Maybe we should strive to replace all these with something better in Python 3.0, to be prototyped in the standard library starting with 2.4.

--Guido van Rossum (home page: http://www.python.org/~guido/)