python-pytorchHow can I use Python Poetry to install PyTorch?

Python Poetry is a tool used to manage dependencies and create virtual environments for Python projects. It can be used to install PyTorch, a popular open-source deep learning library for Python.

To install PyTorch with Python Poetry, first create a new project directory and cd into it:

$ mkdir my_pytorch_project
$ cd my_pytorch_project

Then, create a pyproject.toml file to define the dependencies for the project. This file should include the following lines to install PyTorch:

[tool.poetry.dependencies]
python = "^3.7"
pytorch = "^1.6.0"

Next, run poetry install to install the dependencies. This will create a virtual environment for the project and install PyTorch in it.

$ poetry install
Creating virtualenv my_pytorch_project in /Users/username/.cache/pypoetry/virtualenvs
Installing dependencies from lock file

Package operations: 7 installs, 0 updates, 0 removals
  - Installing numpy (1.19.2)
  - Installing torch (1.6.0)
  - Installing torchvision (0.7.0)
  - Installing six (1.15.0)
  - Installing future (0.18.2)
  - Installing typing-extensions (3.7.4.3)
  - Installing wheel (0.35.1)

Finally, activate the virtual environment and check that PyTorch is installed:

$ poetry shell
$ python
>>> import torch
>>> torch.__version__
'1.6.0'

Code explanation

• mkdir my_pytorch_project: create a new project directory
• cd my_pytorch_project: change working directory to the new project directory
• [tool.poetry.dependencies]: define the dependencies in the pyproject.toml file
• python = "^3.7": install Python version 3.7 or higher
• pytorch = "^1.6.0": install PyTorch version 1.6.0 or higher
• poetry install: install the dependencies and create a virtual environment
• poetry shell: activate the virtual environment
• import torch: import the PyTorch library
• torch.__version__: check the version of PyTorch installed

Helpful links

• https://python-poetry.org/docs/
• https://pytorch.org/

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