blackbull.di

blackbull.di

Per-request dependency injection for simplified handlers.

Async-generator providers finalize after response sending; put cleanup in finally. Provider forms are resolved at registration, not during dispatch.

Depends

Inject a zero-argument provider with a default such as db=Depends(get_db).

Async generators yield exactly once and finalize after response sending, LIFO across providers; put cleanup in finally so exceptions cannot skip it. Async functions are awaited; sync functions are called without cleanup. use_cache=True shares one value per provider per request. False invokes it per parameter. Sync generators and nested Depends parameters are rejected.