Training policy updates

[harishthakur52]

No description provided.

[Copilot]

Pull request overview

Updates the Python dependency versions used for the policy training workflow.

Changes:

• Bumped Jupyter notebook, matplotlib, pillow, numpyencoder, and black versions in policy/requirements.txt.

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[Copilot]

These dependency bumps make policy/requirements.txt diverge significantly from the pinned versions in the provided conda env files (e.g., environment_linux.yml pins notebook==6.4.12, matplotlib==3.6.3, numpyencoder==0.3.0, black==23.1.0). Since the README recommends either using the env files or doing a manual setup that ends with pip install -r requirements.txt, this mismatch can lead to inconsistent or conflicting environments depending on which path a user follows. Consider either updating the conda environment files to match these versions, or documenting that requirements.txt is intended for a different setup path (and should not be mixed with the env YAMLs).

Suggested change

	notebook~=7.5.5
	matplotlib~=3.9.4
	pillow~=10.4.0
	numpyencoder~=0.3.2
	black[jupyter]~=25.11.0
	notebook==6.4.12
	matplotlib==3.6.3
	pillow~=10.4.0
	numpyencoder==0.3.0
	black==23.1.0

[thias15]

Fully tested and ready to be merged?

[harishthakur52]

Yes, tested.

[thias15]

Overall: The Copilot review above is stale — it didn't notice the env yamls were also updated in this PR, so its rollback suggestion can be ignored. A few things worth flagging:

1. Notebook 6 → 7 is a major rewrite (Jupyter Notebook 7 is built on JupyterLab; UI, extensions, and some classic-UI features differ significantly). Worth confirming the existing .ipynb files in policy/ still open and execute end-to-end on Notebook 7, especially any cells relying on classic nbextensions or custom widgets.
2. numpy<2 ceiling — intentional? Adding this constraint blocks NumPy 2.x. If the reason is that TensorFlow or another dep doesn't yet support NumPy 2, please add a comment in the env file (or note in the PR) so future maintainers know when it's safe to lift. If it's just defensive, drop it.
3. black 23 → 25 is a major bump. Notebook formatting rules and quote handling have changed across versions. The next time anyone runs black on the policy code/notebooks, expect a large formatting-churn diff. Worth running black . once now and committing the result so it doesn't pollute a future PR.