text: from __future__ import absolute_import, print_function, division
  
  letters = [
      ('b', 'int8'),
      ('w', 'int16'),
      ('i', 'int32'),
      ('l', 'int64'),
      ('d', 'float64'),
      ('f', 'float32'),
      ('c', 'complex64'),
      ('z', 'complex128') ]
  
  shapes = [
          ('scalar', ()),
          ('vector', (False,)),
          ('row', (True, False)),
          ('col', (False, True)),
          ('matrix', (False,False)),
          ('tensor3', (False,False,False)),
          ('tensor4', (False,False,False,False)),]
  
  hdr = '============ =========== ==== =========== ================================='
  print(hdr)
  print('Constructor  dtype       ndim shape       broadcastable')
  print(hdr)
  for letter in letters:
      for shape in shapes:
          suff = ',)' if len(shape[1])==1 else ')'
          s = '(' + ','.join('1' if b else '?' for b in shape[1]) + suff
          print('%s%-10s  %-10s  %-4s %-10s  %-20s' %(
                  letter[0], shape[0], letter[1], len(shape[1]), s, shape[1]
                  ))
  print(hdr)
  