Is there a better way to iterate over two lists, getting one element from each list for each iteration? [duplicate]
Another way to do this would be to by using map.
>>> a[1, 2, 3]>>> b[4, 5, 6]>>> for i,j in map(None,a,b): ... print i,j ...1 42 53 6One difference in using map compared to zip is, with zip the length of new list is
same as the length of shortest list.For example:
>>> a[1, 2, 3, 9]>>> b[4, 5, 6]>>> for i,j in zip(a,b): ... print i,j ...1 42 53 6Using map on same data:
>>> for i,j in map(None,a,b): ... print i,j ... 1 4 2 5 3 6 9 None
Good to see lots of love for zip in the answers here.
However it should be noted that if you are using a python version before 3.0, the itertools module in the standard library contains an izip function which returns an iterable, which is more appropriate in this case (especially if your list of latt/longs is quite long).
In python 3 and later zip behaves like izip.