For the sake of completeness, there's also http://www.pythonweekly.com/ that I know about. Sadly, not being a Pythonista I don't know how they compare.
I am an absolute fan of all weekly emails. Peters are excellent and I would highly recommend signing up for each of them. I also run a weekly newsletter called Web Design Weekly which might be worth a look... http://web-design-weekly.com :D
It may be serendipity, but I like that pythonweekly comes out on Thursday and pycodersweekly comes out on Friday, as opposed to one massive dump of interesting Python stuff on one day.
I highly recommend subscribing to this newsletter. I've been receiving it for a few months months now and it's been really good. The curators are well aware of the latest developments in the community and it shows. The articles highlight the important bits. It's really nice and useful.
I also want to echo this - I've learned about quite a few packages and discussions that I wouldn't have seen otherwise that have been really beneficial.
I dont think the "view sample issue" link should be so small and hidden. Make it as big as the subscribe button. Its the first thing I looked for on the page.
Minor comment. With javascript not enabled for this site, it returns an error from mailchimp but still registers you.
If you then turn on javascript and register, it gives an error for too many subscriptions for the email address.
And in the interest of healthy self promotion(!) http://rubyweekly.com/ http://html5weekly.com/ and http://javascriptweekly.com/ ;-)