Getting lists where an element passes through every index in python? -

kind of strange request.

let's have following list:

[1,2,3] 

and want something, say, number 9, pass through every index, following list of lists:

[[9,1,2,3],  [1,9,2,3],  [1,2,9,3],  [1,2,3,9]] 

any idea how easily? also, there name sort of thing?

edit: realize can following:

lists=[] in range(4):   new_list = [1,2,3]   new_list.insert(i,9)   lists+=[new_list] 

but consider inelegant. thoughts?

you like

l = [1,2,3] new_l = [l[:i] + [9] + l[i:] in range(len(l) + 1)]