>>> help(zip) #3.0

class zip(object)
 |  zip(iter1 [,iter2 [...]]) --> zip object
 |  
 |  Return a zip object whose .__next__() method ... StopIteration.  

 | Works like the zip()
 |  function but consumes less memory by returning an iterator instead of
 |  a list.

The last sentence is left over from when 3.0 zip was itertools.izip.
Just delete it.