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perf: defer building model validators until first use #2784

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perf: defer building model validators until first use #2784

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4 changes: 4 additions & 0 deletions google/genai/_common.py
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Original file line number Diff line number Diff line change
Expand Up @@ -559,6 +559,10 @@ class BaseModel(pydantic.BaseModel):
ser_json_bytes='base64',
val_json_bytes='base64',
ignored_types=(typing.TypeVar,),
# Most of the ~770 models defined in `types` are never used by any single
# application, so build each model's validator and serializer the first time
# the model is actually used rather than when `google.genai` is imported.
defer_build=True,
)

@pydantic.model_validator(mode='before')
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