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Fixes two issues that occur with pandas 3.0's new defaults: 1. filled_array() now handles pandas ExtensionDtype (StringDtype) - numpy.full() cannot handle StringDtype, so convert to object dtype - Fixes: TypeError: Cannot interpret '<StringDtype>' as a data type 2. VectorialParameterNodeAtInstant.__getitem__ now handles StringArray - pandas 3 returns StringArray instead of numpy array for string operations - Convert pandas arrays to numpy before processing - Fixes: TypeError: unhashable type: 'StringArray' Added comprehensive tests that verify both fixes work correctly. Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
This was referenced Jan 24, 2026
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Summary
filled_array()to handle pandas ExtensionDtype (StringDtype) that becomes default in pandas 3VectorialParameterNodeAtInstant.__getitem__to handle StringArray from pandas 3Test plan
Fixes issues reported in policyengine-uk#1489 and related to pandas 3.0.0 release.
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