Python - Iterating Multiple Sequences

Here are some examples of iterating through multiple sequences simultaneously in Python:

I start with 2 lists of numbers:

I want to create a new list that is made up of the sum of the items at each position in the original lists.  So I will end up with this:

Starting with an unpythonic way...
Here I use a counter to iterate through the indexes of each sequence and build a new list:

Getting more pythonic...
Here I use zip. Zip allows me to iterate each sequence simultaneously, assigning the current sequence values each time through the loop:

The older pythonic way to do this was with map:

Getting even more pythonic and more concise...
I can combine zip with a list comprehension and do it in a one-liner like this:

*note:  zip will not be part of Python 3000.  It will be replaced by izip and iterators to achieve similar results.