isort error To configure isort with pyproject.toml, install with 'isort[pyproject]'.

[daniellepintz]

When I run isort in the pytorch_lightning directory, I get this error:

(pl) [~/pytorch-lightning] isort pytorch_lightning/core/datamodule.py
/mnt/xarfuse/uid-224959/aff8e5c1-seed-nspid4026531836_cgpid43584994-ns-4026531840/isort/settings.py:296: UserWarning: Found /home/daniellepintz/pytorch-lightning/pyproject.toml with [tool.isort] section, but toml package is not installed. To configure isort with /home/daniellepintz/pytorch-lightning/pyproject.toml, install with 'isort[pyproject]'.
  warnings.warn("Found {} with [tool.isort] section, but toml package is not installed. "

I made sure to install pre-commit with pip install pre-commit. Has anyone seen this issue before? It seems that isort should work out of the box with pre-commit, and indeed this was the case in a different environment setup that I had.

Someone else who experienced the same issue fixed it in PyCQA/isort#1137 (comment) by "Adding the toml dependency".

[daniellepintz]

And, the issue magically went away. #resolved