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lifespan() — fastapi Function Reference

Architecture documentation for the lifespan() function in tutorial003_py39.py from the fastapi codebase.

Function python FastAPI Applications

Entity Profile

Dependency Diagram

graph TD
  05846321_1967_8db9_bb40_9f0bfa7cf5f5["lifespan()"]
  71f2968e_1af1_02b0_6082_4ff2aceb8912["tutorial003_py39.py"]
  05846321_1967_8db9_bb40_9f0bfa7cf5f5 -->|defined in| 71f2968e_1af1_02b0_6082_4ff2aceb8912
  style 05846321_1967_8db9_bb40_9f0bfa7cf5f5 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

docs_src/events/tutorial003_py39.py lines 14–19

async def lifespan(app: FastAPI):
    # Load the ML model
    ml_models["answer_to_everything"] = fake_answer_to_everything_ml_model
    yield
    # Clean up the ML models and release the resources
    ml_models.clear()

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Defined In

Source

Frequently Asked Questions

What does lifespan() do?
lifespan() is a function in the fastapi codebase, defined in docs_src/events/tutorial003_py39.py.
Where is lifespan() defined?
lifespan() is defined in docs_src/events/tutorial003_py39.py at line 14.

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