lst_one = [1, 2, 3, 4]
iterable = 6
lst_two = []

while lst_one:
  i = iterable % len(lst_one)
  lst_two.append(lst_one[i])
  del lst_one[i]
  iterable += 1

print(lst_one)  # []
print(lst_two)  # [2, 1, 4, 3]