pymc-devs / pymc-devs/pytensor

PyTensor function should return a tuple for multiple outputs not a list

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Dominant language
Python
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644
Forks
208
Avg merge
2d 14h
Merged PRs (30d)
16

Description

Description

This is an odd output type. Also we could avoid an extra conversion from the Jitted functions, which naturally return tuples, not lists. May count as a breaking change so perhaps for PyTensor v3

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

The issue names no file, function, or test. Start by locating the PyTensor function that returns a list for multiple outputs, compare its result with the jitted function's tuple result, and check how the potential PyTensor v3 breaking change is handled. Done means the multiple-output behavior and its compatibility scope are clearly defined.

Written by the indexing model from the issue text.

Assessment

Tech stack
python
Domain
backend-api-design
Issue type
Bug
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
35/100

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