# Example 3 
ip_tensor=torch.rand(2,3)
torch.unsqueeze(ip_tensor,3)

# Output
--------------------------------------------------------------------------
IndexError                                Traceback (most recent call last)
<ipython-input-28-e1fcd3f3f58a> in <module>()
      1 # Example 3
      2 ip_tensor=torch.rand(2,3)
----> 3 torch.unsqueeze(ip_tensor,3)

IndexError: Dimension out of range (expected to be in range of [-3, 2], but got 3)