Fix Pydantic v2.11+ compatibility in BaseModel #1270
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Replace deprecated populate_by_name with validate_by_name/validate_by_alias Add version detection for backward compatibility with Pydantic v1 Fixes SchemaError when importing google.genai with Pydantic v2.11+
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Summary
Fixes Pydantic v2.11+ compatibility issue where google-genai v1.30.0 fails to import due to deprecated
populate_by_nameconfiguration parameter.Problem
Import fails with
pydantic_core._pydantic_core.SchemaError: Invalid Schema: model.config.populate_by_name Extra inputs are not permittedwhen using Pydantic v2.11+.Root Cause
google/genai/_common.pyline 417 uses deprecatedpopulate_by_name=Trueparameter. According to Pydantic documentation: "populate_by_name usage is not recommended in v2.11+ and will be deprecated in v3." The official replacement isvalidate_by_name=True+validate_by_alias=True.Solution
validate_by_name=True+validate_by_alias=Truefor Pydantic v2.11+populate_by_name=Truefor Pydantic v1 backward compatibilityTesting
Impact
Resolves breaking change that forced users to downgrade to google-genai v1.29.0 when using modern Pydantic versions.
References