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")

• Zero dependencies — standard library only
• Async-native — built on AsyncExitStack and ContextVar
• 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

pip install uncalled-for