Upgrade main branch for Python 3.13 and LiteRT#27
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## Summary - port the scoped Python 3.13 upgrade work onto a clean branch from `docgarbanzo/main` - add a step-by-step branch plan in `MAIN_PY313_UPGRADE_PLAN.md` - keep the detailed upgrade notes in `PYTHON313_UPGRADE.md` ## Dependency and CI updates - require Python 3.13 in `setup.cfg` - update TensorFlow / tf-keras to the Python 3.13-compatible 2.21 series - switch Pi TFLite runtime dependency to `ai-edge-litert` - update the conda CI workflow to test Python 3.13 ## TensorFlow / Keras compatibility - replace deprecated `tensorflow.python.*` imports with supported `tensorflow.keras.*` and `tf.saved_model.*` APIs - update Keras 3 model save/load expectations and `.keras` handling - adjust Keras training and shape handling for current TensorFlow/Keras behavior - make TensorFlow-dependent code import-safe when TensorFlow is absent ## LiteRT / Pi inference compatibility - add TFLite tensor-API fallback for models without signatures - keep explicit interpreter resolution for `ai-edge-litert` vs full TensorFlow installs - make `output_shapes()` work without TensorFlow installed - harden shape handling for scalar and NumPy integer inputs used during LiteRT inference ## Tests - skip TensorFlow-dependent tests when TensorFlow is not installed - update script and training tests for Keras 3 behavior - run the full suite in the `donkey313` environment ## Validation - `pytest` on `main-py313-upgrade` in `donkey313` - `163 passed, 16 skipped, 1 xfailed` ## Notes - this branch was rebuilt from synced `docgarbanzo/main` and only carries the scoped Python 3.13 / LiteRT upgrade work, not unrelated `dev` changes from `python313-upgrade`
tensorflow-metal has no wheel for Python 3.13, causing installation to fail on macOS. Removing it until Apple ships a compatible release; TF 2.21 will run CPU-only on macOS under Python 3.13. Co-Authored-By: Claude Sonnet 4.6 <[email protected]>
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Summary
mainMAIN_PY313_UPGRADE_PLAN.mdandPYTHON313_UPGRADE.mdHighlights
setup.cfg2.21.*ai-edge-literttensorflow.python.*imports with supported APIsoutput_shapes()work without TensorFlow installedValidation
Tested in the
donkey313environment:pytest163 passed, 16 skipped, 1 xfailedNotes
This branch was rebuilt from synced
docgarbanzo/mainand carries only the scoped Python 3.13 / LiteRT upgrade work, without unrelateddevchanges frompython313-upgrade.