Update tensor.where to allow for case with only condition

[tanish1729]

Description

Allows tensor.where to work similar to np.where in case only a condition is given

Related Issue

• Closes tensor.where does not behave like np.where when only one input (condition) is passed #829

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

• New feature / enhancement
• Bug fix
• Documentation
• Maintenance
• Other (please specify):

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 80.89%. Comparing base (d3bd1f1) to head (49153cd).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #844   +/-   ##
=======================================
  Coverage   80.89%   80.89%           
=======================================
  Files         169      169           
  Lines       46979    46984    +5     
  Branches    11478    11480    +2     
=======================================
+ Hits        38002    38007    +5     
- Misses       6764     6767    +3     
+ Partials     2213     2210    -3     

Files	Coverage Δ
pytensor/tensor/basic.py	88.47% <100.00%> (+0.03%)	⬆️

... and 3 files with indirect coverage changes

[ricardoV94]

Needs a test

[tanish1729]

should i also be testing for cases where ift and iff are being passed or only for the new case which we deal with?

[ricardoV94]

should i also be testing for cases where ift and iff are being passed or only for the new case which we deal with?

Yeah that makes sense, and also test the error case

[tanish1729]

in the case where it should raise an exception, it is correctly doing that but the np.testing.assert_allclose wont pass in that case. how to check for cases where an error should be raised?

[ricardoV94]

in the case where it should raise an exception, it is correctly doing that but the np.testing.assert_allclose wont pass in that case. how to check for cases where an error should be raised?

with pytest.raises context manager

https://docs.pytest.org/en/7.1.x/how-to/assert.html

[tanish1729]

everything seems to be working fine now. lmk if any more changes are required or if some implementation should be done differently

[ricardoV94]

Thanks @tanish1729