python merge two lists (even/odd elements)

Question

Given two lists, I want to merge them so that all elements from the first list are even-indexed (preserving their order) and all elements from second list are odd-indexed (a

Answer 1

You can simply do:

for i,v in enumerate(y):
    x.insert(2*i+1,v)

this takes the advantage that insert will use the last index when it is overpassed.

One example:

x = [0,1,2,3,4,5]
y = [100, 11,22,33,44,55,66,77]
print x
# [0, 100, 1, 11, 2, 22, 3, 33, 4, 44, 5, 55, 66, 77]