[tptacek]

It's a running joke at my company (we consult for startups) that no matter what stack they build on, they'll always have a small team of people writing in Python for data science. Which is presumably where that's coming from. It is indeed a sort of de facto standard.

But that's not at all to say that learning Django or Python will get you a data science job; the underlying domain-specific data-science stuff is much harder to learn and qualify for than the Python is.