Allow pytensor 3.3

[velochy]

Description

Raises the PyTensor upper bound from <3.3 to <3.4 so that the current PyTensor 3.3.x releases can be used with PyMC. The pin is updated in requirements.txt, requirements-dev.txt and the six conda-envs/*.yml files.

No source changes were needed: PyTensor 3.3.0 documents no breaking changes (free-threaded build support, MLX dispatches, and bugfixes), so the lower bound stays at >=3.2.2 and both 3.2.x and 3.3.x remain supported.

Testing

Ran the full test suite locally on Python 3.12 against PyTensor 3.3.0 and 3.2.4 with everything else held fixed. The two runs produce identical results — same 3444 passed, same 42 failed, and a byte-identical list of failing test ids:

pytest tests -n 8 --ignore=tests/step_methods
3.3.0: 42 failed, 3444 passed, 66 skipped, 21 xfailed
3.2.4: 42 failed, 3444 passed, 66 skipped, 21 xfailed

The 42 failures are unrelated to this change and reproduce on the currently-supported 3.2.4: 36 are Multinomial tests that only fail under xdist (they pass when the selection is run on its own, so they look like local test-pollution), and the rest are missing optional dependencies in my environment (nutpie, h5py). tests/step_methods was run separately because unrelated lambda-id()-based parametrization ids break xdist collection matching; it passes: 133 passed, 6 skipped.

Related Issue

• Closes #
• Related to #

Checklist

• Checked that the pre-commit linting/style checks pass
• Included tests that prove the fix is effective or that the new feature works
• Added necessary documentation (docstrings and/or example notebooks)
• If you are a pro: each commit corresponds to a relevant logical change

Type of change

• Maintenance

[read-the-docs-community]

Documentation build overview

📚 pymc | 🛠️ Build #34086804 | 📁 Comparing 0f1e075 against latest (47bdf54)

  🔍 Preview build  

2 files changed

± glossary.html
± _modules/pytensor/tensor/extra_ops.html

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 91.87%. Comparing base (47bdf54) to head (0f1e075).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #8400   +/-   ##
=======================================
  Coverage   91.87%   91.87%           
=======================================
  Files         128      128           
  Lines       21256    21256           
=======================================
  Hits        19530    19530           
  Misses       1726     1726           

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