[LargeWu]

Just looking at the python/ruby communities mostly from the outside, I wouldn't discount that many python folks dislike Git simply because many rubyists like it. I'm not saying there aren't valid technical reasons, (and frankly I don't know much technically about either Git or Mercurial) but I'd be surprised if emotion/religion doesn't play in at least a little bit.

[erlanger]

That's a good point. Ruby has really become Python's "Other" in spite of their similarities.