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zip() function works fine on two lists of the same size, however, it drops the elements from the bigger list if lists are of different size. How can I keep all the elements using zip()?

E.g. if a=[1,3,5,7] and b=[2,4,6,8,10], the output should be [(1, 2), (3, 4), (5, 6), (7, 8), (,10)]

and 

if a=[1,3,5,7,9] and b=[2,4,6,8], the output should be [(1, 2), (3, 4), (5, 6), (7, 8), (9,)]

1 Answer

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by (11.3k points)

I think only zip() function will not solve your problem. You need to do some additional thing to get your desired output. Try the following code:

>>> a=[1,3,5,7]
>>> b=[2,4,6,8,10]
>>> zip(a, b) + [tuple([x]) for x in a[len(b):]] + [tuple([x]) for x in b[len(a):]]
[(1, 2), (3, 4), (5, 6), (7, 8), (10,)]

Also, I am not sure if you can get (,10) in the output. I tried different approaches, but it seems that tuple does not allow first element empty.

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