import qrcode

      bar = qrcode.QRCode(border=0)
      bar.add_data('bar')
      bar.make()
      bar_mat = bar.get_matrix()

      foo = qrcode.QRCode(border=0)
      foo.add_data('foo')
      foo.make()
      foo_mat = foo.get_matrix()

      for l, r in zip(foo_mat, bar_mat):
          line = ''
          for lc, rc in zip(l, r):
              line = line + (lc and '\u2588' or ' ')
              line = line + (rc and '\u2588' or ' ')
          print(line)
          print(line)