Bird
0
0

Which Python feature is used to create a lifespan context manager in FastAPI?

easy🧠 Conceptual Q2 of 15
FastAPI - Middleware and Hooks
Which Python feature is used to create a lifespan context manager in FastAPI?
ADecorator for route handlers
BClass inheritance from BaseModel
CSynchronous function returning a list
DAsync generator function with yield
Step-by-Step Solution
Solution:

  1. Step 1: Identify lifespan implementation

    FastAPI lifespan uses an async generator function that yields control during startup and shutdown.

  2. Step 2: Eliminate incorrect options

    Class inheritance, synchronous functions returning lists, and decorators for routes do not create lifespan managers.

  3. Final Answer:

    Async generator function with yield -> Option D

  4. Quick Check:

    Lifespan uses async generator with yield [OK]
Quick Trick: Lifespan uses async def with yield for startup/shutdown [OK]
Common Mistakes:
MISTAKES
  • Using sync functions without yield
  • Confusing with route decorators
  • Trying to subclass unrelated classes

Want More Practice?

15+ quiz questions · All difficulty levels · Free

Free Signup - Practice All Questions
More FastAPI Quizzes
Authentication and Security - Bearer token handling - Quiz 5medium Authentication and Security - Password hashing with bcrypt - Quiz 13medium Authentication and Security - OAuth2 password flow - Quiz 11easy Authentication and Security - Role-based access control - Quiz 2easy Database Integration - Alembic migrations - Quiz 2easy Database Integration - Connection pooling - Quiz 15hard Dependency Injection - Dependencies with parameters - Quiz 9hard Dependency Injection - Shared dependencies - Quiz 3easy Dependency Injection - Global dependencies - Quiz 4medium Middleware and Hooks - Custom middleware creation - Quiz 11easy