text: import torch # someone would using shortcut
  
  # torch.Tensor is basic unit
  # like numpy in Deep Learning
  
  # init Tensor
  t1 = torch.Tensor([3.0, 2.5, -7.2])
  print(t1)
  
  # transpose tensor
  t2 = torch.Tensor([[1, 3, 5], [-2, -4, -6]])
  print(t2.shape)
  
  # transpose
  print(t2.t())
  
  # Loss Function
  l = torch.nn.MSELoss()            # Mean Square Loss
  l = torch.nn.CrossEntropyLoss()   # Cross Entropy Loss
  