Starting from basics, you can loop over one list and use a counter to index
into the same location on the matching target list:
x = ["a1","b1","c1"]
y = ["a2","b2","c2"]
i = 0
for item in x:
print item, y[i]
i += 1
Python provides an automatic way to do this approach:
for i, item in enumerate(x):
print item, y[i]
The zip() function can create pair-wise items from two lists:
for item1, item2 in zip(x, y):
print item1, item2
In python2, that has the downsize of creating potentially large temporary
lists in memory for you to iterate over. So there is a more efficient
generator option for very large lists :
from itertools import izip
for item1, item2 in izip(x, y):
print item1, item2
Note in python 3, the zip() function becomes the efficient generator like
izip() in python 2.
Justin
On Thu, Sep 13, 2018, 7:41 AM Russell Pearsall <[email protected]> wrote:
> You can use zip (as in zipper) to combine the lists as you want.
>
> for g,t in zip(GEO,TGT):
> Some_func(g, t)
>
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