I got my copy emailed, didn't realise it was publically available so hadn't said anything hehe.
As ever with statistics though, it's important to take into account the sample group. Sitepoint is probably not a totally fair reflection of the entire web development community (although it is probably better than most), so it may just be that not many Python programmers visit. Python certainly isn't a focus/encouraged language for Sitepoint, as evidenced by the 'Perl, Python and other languages' forum.
Meanwhile, Ruby is the hot language of the moment and users demanded, so Sitepoint provided a Ruby-specific forum. This necessarily doesn't mean Ruby is more popular, but does mean that Ruby programmers after that point are probably more likely to stick around than Perl or Python programmers.
Not wanting to put a downer on Ruby - I love it and have never really looked at Python beyond glancing on my brother's screen when he's been showing off his latest program. The stats to me show that Ruby is definitely on the up and up (over 21% of people surveyed wanted more Ruby resources on the web), but I'm not sure it's more popular than Python (yet). That said, I have no evidence it's not either
There are some interesting findings in there besides language comparisons too, such as 36% of people building their own CMS rather than use a ready made option, or none at all. 28% are apparently still chugging along with static sites!
40% of people using Flash in projects surprised me (I wouldn't say anywhere near 40% of the sites I see around the web use Flash, so again suggests a bias in the Sitepoint content/audience although I've never noticed SP pushing Flash much). The percentage drops significantly for people planning to use it in the next year though.
The question on 'What best describes your primary involvement with the Web?' certainly helps show the slant in the answers - it surprised me how few employees of design firms seem to visit, suggesting the 40% owners/freelancers is largely freelancers.
Where do all the professional designers/developers working for design/dev firms go? A survey that included more of them could be an interesting comparison to the largely freelance/in-house audience Sitepoint seems to have.