Why Python will continue to grow
Python is the top language used to teach object oriented programming at universities. Why shouldn't it be. Its backed by google, a much simpler syntax than Java or C and more straightforward to read.
True many universities may use it as an intro to object oriented programming and move on to Java or C but its popularity continues to rise
http://www.tiobe.com/index.php/content/paperinfo/tpci/index.html
So it is taught in universities, what difference does that make? Well there could be a strong correlation to languages selected and used as newly minted graduates get out into the workforce and rise into positions to decide what technologies to implement. Many outsourced vendors will learn and support what is popular in the market and should fit nicely for many projects that do not need large enterprise level support. We have already seen this with the proliferation of PHP abroad.
Also, Python's features allow it to gain market share from most of the major programming languages.
It is much easier to learn then Java, takes less boilerplate code and can still provide the heavy duty lifting typically required by enterprise level software. True I have never really pushed the limits of it but if it is good enough for google it should be good enough for most projects.
It's also open source so can be much more appealing than a C# shop relying on microsoft technologies and MSDN subscriptions.
Where I think it stands to gain the most is with PHP developers. PHP can be a bad word with its lack of structure and numerous advocates who install a wordpress template which they claim makes them "PHP experts".
Python hits that niche of being easy enough for people to pick up, but still structured enough for companies not to scoff at it.
With the Ruby craze dying down, if you are looking for a new language that will continue to grow, give Python a spin ... it appears most everyone else is.