The Slashdot summary is confusing, as is the eweek.com headline. Reading the article, it is clear that it is about the code that powers the official Python interpreter, AKA CPython, AKA /usr/bin/python. When I clicked the link, I thought Coverity had surveyed the entire world of open source Python code and discovered that Python programmers as a whole publish higher quality code than people who e.g. program in Ruby. That's not what the article's about.
It'd be great if the headline in Slashdot were to be fixed to say, "Python interpreter has fewer code defects compared to other open source C programs, says Coverity."