如何将2D列表分为一个2D列表和一个数组（删除最后一列）

Question

I have the following 2D list

list = [[1,1,a],[2,2,b],[3,3,c]]

and I want to convert this 2D list to one 2D list and an array

sublist = [[1,1],[2,2],[3,3]] 
subarray = [a,b,c]

Is there any convenient way to do that in python. I'm new to python, so I dont know if there's any grammar which can perform the above calculation.

Answer 1

Try this:

lst = [[1,1,a],[2,2,b],[1,3,c]]
sublist = list(map(lambda x: [x[0],x[1]], lst))
subarray = list(map(lambda x: x[2], lst))

Answer 2

List comprehensions are a good, clean solution:

sublist = [[a[0], a[1]] for a in list]
subarray = [a[2] for a in list]