Is there a better way to iterate over two lists, g

Question

This question already has an answer here:

• How to iterate through two lists in parallel? 8 answers

I have a list of Latitudes and one of Longitudes and need to iterate over the latitude and longitude pairs.

Is it better to:

• A. Assume that the lists are of equal lengths:

  for i in range(len(Latitudes):
      Lat,Long=(Latitudes[i],Longitudes[i])
  

• B. Or:

  for Lat,Long in [(x,y) for x in Latitudes for y in Longitudes]:
  

(Note that B is incorrect. This gives me all the pairs, equivalent to itertools.product())

Any thoughts on the relative merits of each, or which is more pythonic?

Answer 1

This is as pythonic as you can get:

for lat, long in zip(Latitudes, Longitudes):
    print lat, long