pymc-devs / pymc-devs/pytensor
Scalar * Tensor operations fails
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NumPy compatibility
Op implementation
- Dominant language
- Python
- Stars
- 644
- Forks
- 208
- Avg merge
- 2d 14h
- Merged PRs (30d)
- 16
Description
Description
import pytensor.scalar as ps
import pytensor.tensor as pt
a = ps.float64("a")
b = pt.vector("b")
b * a # Fine
a * b # TypeError: TypeError: Cannot convert b to a scalar type
It tries to convert b to a scalar, which fails. When it fails, it should try to multiply b * a, which works
Contributor guide
First steps
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Research direction
Run the provided Python example using pytensor.scalar and pytensor.tensor to reproduce the failure for a * b. Trace the scalar-tensor multiplication path and compare it with the working b * a case; done means both operand orders construct the multiplication without a TypeError.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- python
- Domain
- backend
- Issue type
- Bug
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 45/100