Create (nested) List From Two Lists In Python


Answer :

Use the builtin zip function. It's exactly what you want. From the python manuals:



>>> x = [1, 2, 3]
>>> y = [4, 5, 6]
>>> zipped = zip(x, y)
>>> zipped
[(1, 4), (2, 5), (3, 6)]


Or if you want a list of lists, instead of a list of tuples, you use zip with a list comprehension:



>>> zipped = [list(t) for t in zip(x, y)]
>>> zipped
[[1, 4], [2, 5], [3, 6]]


Try:



listone = [1,2,3]
listtwo = [4,5,6]

merged = map(list, zip(listone, listtwo))


zip(listone, listtwo) will return a list of tuples. Since you want a list of lists you need to convert each tuple to a list. map(list, list_of_tuples) call will do exactly that.



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