feat: COOLEST export/import guide (guides/coolest_interop) - #283
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New guide for al.interop.coolest (PyAutoLens#613/#615): export a lens model to a COOLEST JSON template, import it back as a Tracer, verify the round trip, with convention notes (East-of-North angles, intermediate- axis radii, NFW sigma_crit). Notebook + catalogue regenerated. Named coolest_interop because a guides/coolest.py would shadow the coolest package on sys.path. Part of PyAutoLabs/PyAutoLens#612. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
This was referenced Jul 17, 2026
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Summary
Adds a minimal practitioner guide for the new COOLEST interop layer (
al.interop.coolest, PyAutoLens#612): export a lens model's analytic profile parameters to a COOLEST JSON template, import a template back as aTracer, verify the round trip numerically, and understand the convention mapping (East-of-North position angles, intermediate-axis radii and the power-lawtheta_Efactor, NFWsigma_crit). Requirespip install autolens[coolest].The script is named
coolest_interop.py(notcoolest.py) because the script's own directory is onsys.pathand acoolest.pyshadows thecoolestpackage — running it surfaced (and PyAutoLens#615 fixed) a relative-path bug into_coolest/from_coolest.Scripts Changed
scripts/guides/coolest_interop.py— new COOLEST export/import guide (runs end-to-end; round trip agrees to machine precision)scripts/guides/README.md— added the guide to the files listnotebooks/guides/coolest_interop.ipynb,notebooks/guides/README.md,llms-full.txt,workspace_index.json— regenerated (catalogue diff contains only the new guide)Upstream PR
PyAutoLabs/PyAutoLens#613 (MERGED), PyAutoLabs/PyAutoLens#615 (MERGED)
Test Plan
python scripts/guides/coolest_interop.pyruns green end-to-end (max deflection round-trip difference 8.9e-16).Generated by the PyAutoLabs agent workflow.