This post is older than a year. Consider some information might not be accurate anymore.
Python
tan@prometheus:~> python
Python 2.7.5 (default, Apr 9 2015, 11:03:32)
[GCC 4.8.3 20140911 (Red Hat 4.8.3-9)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import socket
>>> socket.gethostname()
'prometheus'
>>> exit()