Ente Isle translator

import sys

orig = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz'
trans = 'AZYXEWVTISRLPNOMQKJHUGFDCBazyxewvtisrlpnomqkjhugfdcb'
tl_map = dict(zip(orig, trans))

def translate(text):
    return ''.join([tl_map.get(x, x) for x in text])

def translate_lines():
    while True:
        line = raw_input()
        print ''.join(translate(line))
        if (line == ''):
            break

if __name__ == '__main__':
    if len(sys.argv) > 1:
        print translate(' '.join(sys.argv[1:]))
    else:
        translate_lines()