Well, fair enough then, I take that back. Nonetheless, I know a few python web programmers, and zero of them use windows. I imagine that libraries would be a big issue too, not to mention the native lack of simple things like a proper command line, ssh, all the normal tools. Sure, you might be able to make it all kind-of work, but it's harder than it should be and decidedly outside of the mainstream.

Couldn't really comment on academic computing. I suppose, though, they are not really relying on the larger ecosystem as much as (say) web applications, so would not be affected so badly by the libraries issue.