list extend() to index, inserting list elements not only to the end
Sure, you can use slice indexing:
a_list[1:1] = b_listJust to demonstrate the general algorithm, if you were to implement the my_extend function in a hypothetical custom list class, it would look like this:
def my_extend(self, other_list, index): self[index:index] = other_listBut don't actually make that a function, just use the slice notation when you need to.