old.py

    def make_col(a_list_of_lists):
      col_list = []
      n = len(a_list_of_lists)
      for n in range(len(a_list_of_lists)):
        col = [l[n] for l in a_list_of_lists]
        col_list.append(col)
      print(col_list)
      return col_list