How to zip lists in a list
I want to zip the following list of lists:
>>> zip([[1,2], [3,4], [5,6]])
[[1,3,5], [2,4,6]]
This could be achieved with the current zip
implementation only if the list is split into individual components:
>>> zip([1,2], [3,4], [5,6])
(1, 3, 5), (2, 4, 6)]
Can't figure out how to split the list and pass the individual elements to zip
. A functional solution is preferred.
Solution 1:
Try this:
>>> zip(*[[1,2], [3,4], [5,6]])
[(1, 3, 5), (2, 4, 6)]
See Unpacking Argument Lists:
The reverse situation occurs when the arguments are already in a list or tuple but need to be unpacked for a function call requiring separate positional arguments. For instance, the built-in range() function expects separate start and stop arguments. If they are not available separately, write the function call with the *-operator to unpack the arguments out of a list or tuple:
>>> range(3, 6) # normal call with separate arguments
[3, 4, 5]
>>> args = [3, 6]
>>> range(*args) # call with arguments unpacked from a list
[3, 4, 5]