Improvements for import this

[Michael Hoffman]

As the capabilities of core Python have increased, I've noticed that the 
logic in import this can be simplified to one line:

print s.decode("rot13")

;)

At the very least the last line:

print "".join([d.get(c, c) for c in s])

could use a generator expression instead of a list comprehension.
-- 
Michael Hoffman