func_code: def merge_lists(l1, l2):
      list3 = []
      i = 0
      while i < len(l1):
          if i % 2 == 0:
              list3.append(l1[i])
          i = i + 1
      k = 0
      while k < len(l2):
          if k % 2 == 0:
              list3.append(l2[k])
          k = k + 1
      return list3