This is a drop-in replacement for Django's runserver command for the impatient.
Django's development server restarts itself whenever it detects a change in any loaded module, which is great.
What's not so great is that during the restart, there is a window of time where, if you're like me, you'd be hitting Ctrl+R key repeatedly on the browser only to be greeted with ECONNREFUSED because the server is not ready.
Django-pserver solves this problem by reusing the listening socket when it restarts, so you can just hit refresh once and wait (retaining your sanity.)
To use it, simply add pserver to your INSTALLED_APPS, and run manage.py runserver as usual.
I've tested this on Django 1.2.4 and 1.3, but it could well work with other versions.
Tested on OS X only, but should work on any UNIX variant. It will probably break horribly on Windows.