It all depends on the definition of popular. This is not to be confused with widely used. Much more interesting (and catching the Zeitgeist) metric will be: "

It all depends on the definition of popular. This is not to be confused with widely used. Much more interesting (and catching the Zeitgeist) metric will be: "Languages (and tools) the top 5% developers prefer to use when left on their own" From anecdotal evidence Python is indeed somewhat high ranked there.