in short ? high .... I was thought in school around 2000 that C is dead ... and it is still alive and well. Python is a really nice script language and the concept of things like pypy is really cool.
It is use for game engines (-> galactic civilization 1, 2 , 3) as well for maya studio for 3d animations, the django web framework is working and running, fabric is a stateless deployment framework. So it's alive and well.
So you can switch crafts as well not many other languages allow you to do that.
professor Alex Aiken from stanford CS puts it really well in his introduction to compiler-building on youtube.
Paraphrased he said: It's expensive to change technology because you need to teach a lot of people and loose a lot of knowledge. This is an expensive process for the companies.
so python will remain for a while in our midst as well as other languages Fortran for example or Cobol.
The question you should ask is do you like the paradigms of the language (zen of python, OO, ...). Or do you want to have a clear control of memory and the GC (C, C++) there are so many things to consider :) the question "does it make sense to learn a language" is only relevant in the long run 10 - 20 years.
http://www.tiobe.com/tiobe-index/
here is the current tiobe index which is a good indicator of language use :) (it's not accurate it represents only tendencies)
i hope that helped