This is a simple Powerful Python One-Liners. It prints the systems's hostname to the screen.
from socket import gethostname; print gethostname()
This program has been uploaded to the Wiki. You can download it as an attachment from this page.
Well, sometimes. A lighter-weight variant with desirable properties is
import os; print os.uname()
lwickjr: --which doesn`t seem to work on Windows.
snark: -- use import platform; print platform.uname()
synthesis: -- use import platform; print platform.node()