<b_jonas> slashlearn farbfeld//zzo38\'s Farbfeld utilities is a package of command-line programs (with rather strange command-line syntax) for manipulating images in a specific raw format called farbfeld. It\'s somewhat underdocumented. http://zzo38computer.org/fossil/farbfeld.ui/home

#!/usr/bin/env python
import sys
sys.stdout.write ((lambda s: "".join([(s[i].upper() if i%2!=0 else s[i].lower()) for i in range(len(s)) ]))(open("/dev/stdin").read()))