Question

I have a Python list of data:

[1,2,3,4,5]

I want to read this data into a file as a column in the following way:

1
2
3
4
5

and then I want my next list ([6,7,8,9,10]) to be added to it (with a tab):

1 6  
2 7  
3 8  
4 9  
5 10  

and so on.

Could anyone help me with how I can do this please?

Answer 1

Use the built-in function zip():

with open('data.txt', 'w') as f:
    lst = [[1, 2, 3, 4, 5], [6, 7, 8, 9, 10], [11, 12, 13, 14, 15]]
    for x in zip(*lst):
        f.write("{0}\t{1}\t{2}\n".format(*x))

output:

1   6   11

2   7   12

3   8   13

4   9   14

5   10  15