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.
And in the interest of healthy self promotion(!) http://rubyweekly.com/ http://html5weekly.com/ and http://javascriptweekly.com/ ;-)