Python Creating lists of lists

Question

I have 3 lists examples below, I want to match each one and create new lists

l1 = [a,b,c]
l2= [1,2,3]
l3=[7,8,9]

How do I create 3 new lists with expected output:

l1 = [a,1,7]
l2= [b,2,8]
l3=[c,3,9]

Thanks!

Answer 1

Use zip or a comprehension:

# Create a list of lists
ls = [l1, l2, l3]

ls = list(zip(*ls))  # output: a list of tuples

# OR

ls = [l for l in zip(*ls)]  # output: a list of lists

Output:

>>> ls[0]
['a', 1, 7]

>>> ls[1]
['b', 2, 8]

>>> ls[2]
['c', 3, 9]