fix type hint asynciteration deprecation

Author: giunio-prc

Chapter03/reservation-service/presentation/main.py

@@ -1,6 +1,6 @@
 import logging
 import time
-from collections.abc import AsyncIterator, Awaitable, Callable
+from collections.abc import AsyncGenerator, Awaitable, Callable
 from contextlib import asynccontextmanager
 from typing import TypedDict
 
@@ -22,7 +22,7 @@ class State(TypedDict):
 
 
 @asynccontextmanager
-async def lifespan(_app: FastAPI) -> AsyncIterator[State]:
+async def lifespan(_app: FastAPI) -> AsyncGenerator[State]:
     """
     Lifespan context manager for application startup and shutdown.
     Initializes the repository and stores it in application state.

Chapter05/api-gateway/main.py

@@ -1,4 +1,4 @@
-from collections.abc import AsyncIterator
+from collections.abc import AsyncGenerator
 from contextlib import asynccontextmanager
 from typing import TypedDict
 
@@ -30,7 +30,7 @@ class State(TypedDict):
 
 
 @asynccontextmanager
-async def lifespan(_app: FastAPI) -> AsyncIterator[State]:
+async def lifespan(_app: FastAPI) -> AsyncGenerator[State]:
     # Startup: Initialize service clients from container
     portal_client = container.portal_client()
     reservation_client = container.reservation_client()

Chapter05/api-gateway/tests/conftest.py

@@ -48,7 +48,7 @@ def app_with_limiter(limiter):
 
     @app.exception_handler(RateLimitExceeded)
     async def rate_limit_handler(
-        _request: Request, exc: RateLimitExceeded
+        _request: Request, _exc: RateLimitExceeded
     ):
         from fastapi.responses import JSONResponse
 
@@ -67,7 +67,7 @@ async def rate_limit_handler(
 
     @app.get("/test")
     @limiter.limit("2/minute")
-    async def test_endpoint(request: Request, response: Response):
+    async def test_endpoint(request: Request, _response: Response):
         del request
         return {"message": "ok"}
 

Chapter05/api-gateway/tests/test_aggregation_router.py

@@ -1,4 +1,4 @@
-from collections.abc import AsyncIterator
+from collections.abc import AsyncGenerator
 from contextlib import asynccontextmanager
 from uuid import uuid4
 
@@ -79,7 +79,7 @@ def client(mock_portal_client, populated_reservation_client):
     """Create test client with mock clients using lifespan."""
 
     @asynccontextmanager
-    async def test_lifespan(app: FastAPI) -> AsyncIterator[dict]:
+    async def test_lifespan(_app: FastAPI) -> AsyncGenerator[dict]:
         yield {
             "portal_client": mock_portal_client,
             "reservation_client": populated_reservation_client,

Chapter05/api-gateway/tests/test_app_integration.py

@@ -1,4 +1,4 @@
-from collections.abc import AsyncIterator
+from collections.abc import AsyncGenerator
 from contextlib import asynccontextmanager
 from uuid import uuid4
 
@@ -54,7 +54,7 @@ def app_with_rate_limiter(
     """Create app with mock clients and rate limiter."""
 
     @asynccontextmanager
-    async def test_lifespan(app: FastAPI) -> AsyncIterator[dict]:
+    async def test_lifespan(_app: FastAPI) -> AsyncGenerator[dict]:
         yield {
             "portal_client": mock_portal_client,
             "reservation_client": populated_reservation_client,
@@ -105,7 +105,7 @@ async def availability_summary(
 
     @app.get("/aggregate/health")
     @limiter.limit("5/minute")
-    async def health(request: Request, response: Response):
+    async def health(request: Request, _response: Response):
         del request
         from routers.aggregation import fetch_aggregated_health
 

Chapter07/sitters-catalog/conftest.py

@@ -2,7 +2,7 @@
 Shared test fixtures used across all test modules.
 """
 
-from collections.abc import AsyncIterator, Iterator
+from collections.abc import AsyncGenerator, Iterator
 from contextlib import asynccontextmanager
 from datetime import UTC, datetime
 from unittest.mock import MagicMock
@@ -122,7 +122,7 @@ def app(repository: TinyDBRepository) -> FastAPI:
     """Create test FastAPI app with TinyDB repository."""
 
     @asynccontextmanager
-    async def lifespan(_app: FastAPI) -> AsyncIterator[dict]:
+    async def lifespan(_app: FastAPI) -> AsyncGenerator[dict]:
         yield {"repository": repository}
 
     test_app = FastAPI(lifespan=lifespan)

Chapter07/sitters-catalog/main.py

@@ -1,4 +1,4 @@
-from collections.abc import AsyncIterator
+from collections.abc import AsyncGenerator
 from contextlib import asynccontextmanager
 from typing import TypedDict
 
@@ -39,7 +39,7 @@ class State(TypedDict):
 
 
 @asynccontextmanager
-async def lifespan(_app: FastAPI) -> AsyncIterator[State]:
+async def lifespan(_app: FastAPI) -> AsyncGenerator[State]:
     if settings.repository_type == RepositoryType.MONGO:
         yield {
             "repository": MongoDBRepository(settings.mongo_uri)