introduce iterable schema

[davidhewitt]

Change Summary

Adds iterable_schema, which is intended to solve my proposal in pydantic/pydantic#9541 (comment)

pydantic should update all existing uses of generator_schema to iterable_schema, which allows for lazy = False as a field-level setting. We should probably also have a config setting called lazy_iterables or similar, (TODO).

If we want to allow support for Iterator and Generator types in pydantic, those can use generator_schema.

Related issue number

pydantic/pydantic#9541

Checklist

• Unit tests for the changes exist
• Documentation reflects the changes where applicable
• Pydantic tests pass with this pydantic-core (except for expected changes)
• My PR is ready to review, please add a comment including the phrase "please review" to assign reviewers

[codspeed-hq]

CodSpeed Performance Report

Merging #1792 will not alter performance

_{Comparing dh/iterable-schema (c45e43c) with main (0cd11fe)}

Summary

✅ 163 untouched