pydantic v2.13.0b3

What's Changed

Packaging

• Add riscv64 build target for manylinux by @boosterl in #12723

New Features

• Add ascii_only option to StringConstraints by @ai-man-codes in #12907
• Support exclude_if in computed fields by @andresliszt in #12748
• Push down constraints in unions involving MISSING sentinel by @Viicos in #12908

Changes

• Track extra fields set after init in model_fields_set by @navalprakhar in #12817
• Do not include annotations that are not part of named tuple fields by @galuszkak in #12951
• No longer fall back to trying all union members when the variant selected by discriminator fails to serialize by @navalprakhar in #12825

Fixes

• Support discriminator metadata outside union type alias by @Viicos in #12785
• Respect extras_schema when only extra_fields_behavior is set on the config in JSON Schema generation for typed dictionaries by @Viicos in #12810
• Ensure __pydantic_private__ is set in model_construct() with user-defined model_post_init() by @nightcityblade in #12816
• Handle all schema generation errors in InstanceOf by @Viicos in #12705
• Allow dynamic models created with create_model() to be used as annotations in the Mypy plugin by @Br1an67 in #12879
• Check for PlaceholderNode in Mypy plugin by @Viicos in #12929
• Try other branches in smart union in case of omit errors by @mikeedjones in #12758
• Patch unset attributes with MISSING during model serialization with exclude_unset by @davidhewitt in #12905
• Ensure custom __init__() is called when using model_validate_strings() by @siewcapital in #12897

New Contributors

• @kelsonbrito50 made their first contribution in #12860
• @boosterl made their first contribution in #12723
• @adityagiri3600 made their first contribution in #12868
• @navalprakhar made their first contribution in #12817
• @Br1an67 made their first contribution in #12879
• @rmorshea made their first contribution in #12910
• @N3XT3R1337 made their first contribution in #12922
• @ai-man-codes made their first contribution in #12907
• @Yume05-dev made their first contribution in #12953
• @galuszkak made their first contribution in #12951
• @siewcapital made their first contribution in #12897

Full Changelog: https://github.com/pydantic/pydantic/compare/v2.13.0b2...v2.13.0b3