lifespan() — fastapi Function Reference

Architecture documentation for the lifespan() function in tutorial004_py39.py from the fastapi codebase.

Function python FastAPI Applications

Entity Profile

FastAPI→ Applications→ lifespan() — fastapi Function Reference

Dependency Diagram

graph TD
  1bb50dd4_bc7a_5fff_dc08_bd796172a1c6["lifespan()"]
  928274a7_8738_3478_e87f_645fde08f652["tutorial004_py39.py"]
  1bb50dd4_bc7a_5fff_dc08_bd796172a1c6 -->|defined in| 928274a7_8738_3478_e87f_645fde08f652
  style 1bb50dd4_bc7a_5fff_dc08_bd796172a1c6 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

docs_src/app_testing/tutorial004_py39.py lines 10–15

async def lifespan(app: FastAPI):
    items["foo"] = {"name": "Fighters"}
    items["bar"] = {"name": "Tenders"}
    yield
    # clean up items
    items.clear()