5 interesting PyTorch Functions

PyTorch is an open source machine learning library based on the Torch library, used for applications such as computer vision and natural language processing, primarily developed by Facebook's AI Research lab (FAIR).

torch.add
torch.div
torch.mul
torch.neg
torch.pow

Before we begin, let's install and import PyTorch

# Uncomment and run the appropriate command for your operating system, if required

# Linux / Binder
# !pip install numpy torch==1.7.0+cpu torchvision==0.8.1+cpu torchaudio==0.7.0 -f https://download.pytorch.org/whl/torch_stable.html

# Windows
!pip install numpy torch==1.7.0+cpu torchvision==0.8.1+cpu torchaudio==0.7.0 -f https://download.pytorch.org/whl/torch_stable.html

# MacOS
# !pip install numpy torch torchvision torchaudio

Looking in links: https://download.pytorch.org/whl/torch_stable.html
Requirement already satisfied: numpy in /usr/local/lib/python3.6/dist-packages (1.18.5)
Collecting torch==1.7.0+cpu
  Downloading https://download.pytorch.org/whl/cpu/torch-1.7.0%2Bcpu-cp36-cp36m-linux_x86_64.whl (159.3MB)
     |████████████████████████████████| 159.3MB 67kB/s 
Collecting torchvision==0.8.1+cpu
  Downloading https://download.pytorch.org/whl/cpu/torchvision-0.8.1%2Bcpu-cp36-cp36m-linux_x86_64.whl (11.8MB)
     |████████████████████████████████| 11.8MB 45.7MB/s 
Collecting torchaudio==0.7.0
  Downloading https://files.pythonhosted.org/packages/3f/23/6b54106b3de029d3f10cf8debc302491c17630357449c900d6209665b302/torchaudio-0.7.0-cp36-cp36m-manylinux1_x86_64.whl (7.6MB)
     |████████████████████████████████| 7.6MB 4.0MB/s 
Requirement already satisfied: dataclasses in /usr/local/lib/python3.6/dist-packages (from torch==1.7.0+cpu) (0.8)
Requirement already satisfied: typing-extensions in /usr/local/lib/python3.6/dist-packages (from torch==1.7.0+cpu) (3.7.4.3)
Requirement already satisfied: future in /usr/local/lib/python3.6/dist-packages (from torch==1.7.0+cpu) (0.16.0)
Requirement already satisfied: pillow>=4.1.1 in /usr/local/lib/python3.6/dist-packages (from torchvision==0.8.1+cpu) (7.0.0)
Installing collected packages: torch, torchvision, torchaudio
  Found existing installation: torch 1.7.0+cu101
    Uninstalling torch-1.7.0+cu101:
      Successfully uninstalled torch-1.7.0+cu101
  Found existing installation: torchvision 0.8.1+cu101
    Uninstalling torchvision-0.8.1+cu101:
      Successfully uninstalled torchvision-0.8.1+cu101
Successfully installed torch-1.7.0+cpu torchaudio-0.7.0 torchvision-0.8.1+cpu

# Import torch and other required modules
import torch

Function 1 - torch.add

The torch.add() method adds a constant value to each element of the input tensor and returns a new modified tensor.

# Example 1 - working 
a = torch.tensor([[1, 2], [3, 4.]])
torch.add(a,3)

tensor([[4., 5.],
        [6., 7.]])