GH-43388: [Python] Give precedence to pycapsule interface in pa.schema(..) #43486
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Rationale for this change
When converting an object to a pyarrow.Schema with
pa.schema(..)
, first check the capsule interface before checking for mappings. This allows other schema-like objects that expose the capsule interface to also be mappings.Are these changes tested?
Yes
__arrow_c_schema__
never have their method invoked #43388