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FastAPI

Pydantic v2

The Rust-core rewrite of Pydantic, with a renamed public API.

Why interviewers ask about it

Know the mapping cold: .dict() to .model_dump(), class Config to model_config = ConfigDict(...), orm_mode to from_attributes, @validator to @field_validator. Using v1 names is the clearest sign of a stale answer.

Annotated dependency

Declaring a dependency as `Annotated[Session, Depends(get_db)]` rather than as a default value.

Response model

A Pydantic model declaring exactly what a route returns; fields not declared are stripped.

This term is part of the free Python Full-Stack interview preparation module - browse the full glossary for every definition.

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Why interviewers ask about it

Related terms

Annotated dependency

Response model

Why interviewers ask about it

Related terms

Annotated dependency

Response model