Github is my resume. I remember the first time I heard that statement - a couple years back Eric Florenzano said it to me on Twitter when I posted my resume publicly and asked for opinions.
At the time I laughed at his statement, because it felt like naive arrogance to ditch the idea of a resume and 'traditional' social networking like Facebook and LinkedIn. How wrong I was... Before I go any further, this isn't to say that education, job history, and references aren't important in getting jobs that utilize a lot of Python.
They are important, but I think they go more towards shaping you as a person than getting a job. So if you want access to Python jobs (and possibly other open source languages), you need to be able to show working code. Git cheat sheets. GitHub. Build software better, together. GitHub Pages.