The culture of pycon is entirely welcoming to my students. I won't be able to take students this year, because the travel costs from southeast Alaska are pretty steep. But I have shared with my students the specific ways that the python community supports different groups of non-traditional programmers: pycon policies, pyladies, the Boston Python Workshop initiatives, etc.
Knowing there are specific efforts to support non-traditional programmers makes my students much more open to considering a career in a technical field. The work that Jesse and others are doing is having a significant impact on a large number of people. It's an iceberg, as well; whatever visible impact you see, there are 10 times as many people benefiting from this work.