On the plus side, this isn’t a dataloss bug, or anything like that, just a “break almost every program in existence” bug. Basically, the code for checking for comparison operators got broken. The motivating example is
if sys.version_info < (2, 4):
# do something
I’m sure other cases would be broken as well, so I decided to err on the side of caution and update the release as soon as possible. My apologies to everyone who already downloaded 2.7.2 and was impacted by this.