I just don't see that many Python jobs posted compared to PHP, Java,
and .NET. The majority of what I do see requiring Python are for
sysadmins or test engineers, neither of which I'm remotely interested
in. If Google is to blame for anything, it's having work that's
actually interesting.
Despite my desire to use Python, it's hard to justify spending the
personal time to keep current with it when there don't seem to be many
interesting jobs requiring it. I've been down the road of working at
some random company just so I could use Python, and it's not fun.
The other problem I see is that hiring managers don't see proficiency
in programming languages as a portable skill. As Joseph mentioned, you
can take a competent programmer and grow them into a Python developer
fairly quickly. I'm not sure how the community can actually reach the
HR people who filter resumes though.