ModelGraph only stops ancestry check at model defined named_vars

[lucianopaz]

Closes #6421

Major / Breaking Changes

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New features

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Bugfixes

• ModelGraph.get_parent_names now will only stop at Variable instances whose names are in model.named_vars. Before this, the above mentioned method would return Variable instances with a name that was not None, which could break edges in the returned compute graph.

Documentation

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Maintenance

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[codecov]

Codecov Report

Merging #6426 (9fbf0ee) into main (a7f361b) will decrease coverage by 8.68%.
The diff coverage is 100.00%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #6426      +/-   ##
==========================================
- Coverage   94.74%   86.05%   -8.69%     
==========================================
  Files         148      148              
  Lines       27645    27646       +1     
==========================================
- Hits        26193    23792    -2401     
- Misses       1452     3854    +2402     

Impacted Files	Coverage Δ
pymc/model_graph.py	80.11% <100.00%> (+0.11%)	⬆️
pymc/tests/logprob/test_utils.py	0.00% <0.00%> (-100.00%)	⬇️
pymc/tests/logprob/test_cumsum.py	0.00% <0.00%> (-100.00%)	⬇️
pymc/tests/logprob/test_mixture.py	0.00% <0.00%> (-100.00%)	⬇️
pymc/tests/logprob/test_abstract.py	0.00% <0.00%> (-100.00%)	⬇️
pymc/tests/logprob/test_rewriting.py	0.00% <0.00%> (-100.00%)	⬇️
pymc/tests/logprob/test_joint_logprob.py	0.00% <0.00%> (-100.00%)	⬇️
pymc/tests/logprob/test_composite_logprob.py	0.00% <0.00%> (-100.00%)	⬇️
pymc/tests/logprob/test_transforms.py	0.00% <0.00%> (-99.74%)	⬇️
pymc/tests/distributions/test_truncated.py	0.00% <0.00%> (-99.49%)	⬇️
... and 16 more