NameError: global name ‘unicode’ is not defined – in Python 3
Python 3 renamed the unicode type to str, the old str type has been replaced by bytes. You may want to read the Python 3 porting HOWTO for more such details. There is also Lennart Regebro’s Porting to Python 3: An in-depth guide, free online. Last but not least, you could just try to use the 2to3 tool to see how that translates the code for you.