notation. If None (default) is specified, the value is defined
        by torch._tensor_str._Formatter. This value is automatically
        chosen by the framework.
Example:
  >>> # Limit the precision of elements
  >>> torch.set_printoptions(precision=2)
  >>> torch.tensor([1.12345])
  tensor([1.12])
  >>> # Limit the number of elements shown
  >>> torch.set_printoptions(threshold=5)
  >>> torch.arange(10)
  tensor([0, 1, 2, ..., 7, 8, 9])
  >>> # Restore defaults
  >>> torch.set_printoptions(profile='default')
  >>> torch.tensor([1.12345])
  tensor([1.1235])
  >>> torch.arange(10)
  tensor([0, 1, 2, 3, 4, 5, 6, 7, 8, 9])
