code: def _draw_ascii_graph(self, field):
          '''Draw graph from field double nested list, format field[x][y] = char'''
          row_strings = []
          for y in range(len(field[0])):
              row = ''
              for x in range(len(field)):
                  row += field[x][y]
              row_strings.insert(0, row)
          graph_string = '\n'.join(row_strings)
          return graph_strinf _draw_ascii_graph(self, field):
          '''Draw graph from field double nested list, format field[x][y] = char'''
          row_strings = []
          for y in range(len(field[0])):
              row = ''
              for x in range(len(field)):
                  row += field[x][y]
              row_strings.insert(0, row)
          graph_string = '\n'.join(row_strings)
          return graph_string
docs: Draw graph from field double nested list, format field[x][y] = char