For me, Python's killer app is itself. It has such a huge range, from 5 line scripts, to full blown applications.
To attract developers to Python, we need to find out what they need and show them how Python delivers it. In my company people finally started to pay attention when they saw:
- how quickly I wrote an application in Python
- how quickly I could change the application to meet changing needs
- how easy it was to leverage Python's libraries to do anything from sending HTTP requests, to FTP to parsing and manipulating XML ... and dare I say it ... opening and reading a file
- how easy the code is to read
--- Rod