The itertools fixer (izip -> zip, among others), fails for the following code:

from itertools import izip
print msg % str(bool(symbol_swapped) and list(izip(*swap_dict).next()) or symbols)

It gets converted to:

print(msg % str(bool(symbol_swapped) and list(next(izip(*swap_dict))) or symbols))

(note how izip is still there)

I've worked aroudn this by introducing tmp = izip(...) and using that, but it'd be nice if 2to3 caught it by default.