code: def merge_list(list1, list2):
      
  
      merged = list(list1)
  
      for value in list2:
          if value not in merged:
              merged.append(value)
  
      return merged
docs: Merges the contents of two lists into a new list.
  
      :param list1: the first list
      :type list1: list
      :param list2: the second list
      :type list2: list
      :returns: list