Where are the LightGBM dependencies defined?

[falcon8241]

Pardon me if this is a stupid question:
I am wondering where can I find the dependency requirements for LightGBM Python package, especially for a specific version. E.g. I found a pyproject.toml (https://github.com/microsoft/LightGBM/blob/master/python-package/pyproject.toml) under the master branch. But such file does not exist for a specific version (e.g. if I switch to Tag v3.3.3, this file does not exist).

How do I know the dependency requirement for a specific version?

[jameslamb]

Thanks for using LightGBM!

Not a stupid question.

As you noted, lightgbm (the Python package for LightGBM) now uses pyproject.toml-based builds (#5759). The first release containing that change was v4.0.0.

For the latest unreleased version of lightgbm here on GitHub, look in https://github.com/microsoft/LightGBM/blob/master/python-package/pyproject.toml.

For prior releases, look in setup.py, e.g. https://github.com/microsoft/LightGBM/blob/v3.3.5/python-package/setup.py#L338-L351

For any Python package, if you're ok with installing it then use pip show to see the dependencies.

pip install 'lightgbm==3.3.5'
pip show lightgbm

shows the following

Name: lightgbm
Version: 3.3.5
Summary: LightGBM Python Package
Home-page: https://github.com/microsoft/LightGBM
Author:
Author-email:
License: The MIT License (Microsoft)
Requires: numpy, scikit-learn, scipy, wheel
Required-by:

[falcon8241]

Thank you. That helps a lot.

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