Async dependency injection for Python functions
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Project description
uncalled-for
Async dependency injection for Python functions.
Declare what your function needs as parameter defaults. They show up resolved when the function runs. No ceremony, no container, no configuration.
from uncalled_for import Depends
async def get_db():
db = await connect()
try:
yield db
finally:
await db.close()
async def handle_request(db: Connection = Depends(get_db)):
await db.execute("SELECT 1")
Features
- Zero dependencies — standard library only
- Async-native — built on
AsyncExitStackandContextVar - Context manager lifecycle — sync and async generators get proper cleanup
- Nested dependencies — dependencies can depend on other dependencies
- Caching — each dependency resolves once per call, even if referenced multiple times
Install
pip install uncalled-for
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