Adding numbers at certain positions in datatrees

Hello,

I have a question about adding numbers at the first and last position of a datatree (python script).

I have a list with a certain amount of values (3 in this example) and a datatree containing the same amount of lists.

Now I want to add the first number in the list at the first and last position in the first list of the datatree.

The second number from the list I want to add at the first and last position in the second list of the datatree

The third number from the list to add at the first and last position in the third list of the datatree,

etc.

Appending%20numbers%20to%20datatree.jpg

expected%20result.jpg

Here I have a image of the list and the datatree and the expected result I want to have. Does anybody has a solution on how to write this in python script?

Thanks in advance