Something
public text v1 · immutableletters = ['A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','Q','R','S','T','U','V','W','X','Y','Z']
import sys
def caesar(input):
for i in range(0,len(letters)-1):
print "> %d"%(i)
for l in input:
sys.stdout.write(letters[(letters.index(l)+i)%len(letters)])
print ""