Don't look now, but there has been a new release of Python Mode for emacs. I just happened to look by chance. First time in years and it appears as if it just came out! Loaded it up and - bam! Didn't really notice any difference. I guess that is a good thing.

So if you're the one person I know that develops Python and uses emacs make sure to update your stuff.

This was definitely one of those "ah-ha!" moments in my programming journey.

Take a read of Implementing "weightless threads" with Python generators

Some ideas are so simple they're hard. I think this is one of those cases.