Trust me, Python is doing very well at Enterprise scale. Here's a taster of what it's about in the below links, which are public information, but the Quartz platform is huge. I wish I was at liberty to discuss it in more depth. If you're keen on Python and willing to work hard, it's worth considering Bank of America Merrill Lynch.

https://us.pycon.org/2013/schedule/presentation/155/

http://careers.bankofamerica.com/JobDetails.aspx?SearchPage=...