Question

i can always change bwtween list if I do not have them in One array…

If I have an array having more than one list

 a = [[2,3,4,],[8,14,13],[12,54,98]]

how do I replace a[2] with a[0]??

Thanks in Advance

Answer 1

For your original post:

a = [[2,3,4,],[8,14,13],[12,54,98]]
a[2] = a[0]

then a will be:

[[2, 3, 4], [8, 14, 13], [2, 3, 4]] 

Update based on comment to sdolan below:

If you want to exchange the two, you could simply do this:

a[0], a[-1] = a[-1], a[0]

giving

[[12, 54, 98], [8, 14, 13], [2, 3, 4]]