📝 Update source examples and docs from Python 3.9 to 3.10 (#14900)

docs_src/query_params/tutorial001_py310.py

@@ -0,0 +1,10 @@
+from fastapi import FastAPI
+
+app = FastAPI()
+
+fake_items_db = [{"item_name": "Foo"}, {"item_name": "Bar"}, {"item_name": "Baz"}]
+
+
+@app.get("/items/")
+async def read_item(skip: int = 0, limit: int = 10):
+    return fake_items_db[skip : skip + limit]

docs_src/query_params/tutorial002_py39.py

@@ -1,12 +0,0 @@
-from typing import Union
-
-from fastapi import FastAPI
-
-app = FastAPI()
-
-
-@app.get("/items/{item_id}")
-async def read_item(item_id: str, q: Union[str, None] = None):
-    if q:
-        return {"item_id": item_id, "q": q}
-    return {"item_id": item_id}

docs_src/query_params/tutorial003_py39.py

@@ -1,17 +0,0 @@
-from typing import Union
-
-from fastapi import FastAPI
-
-app = FastAPI()
-
-
-@app.get("/items/{item_id}")
-async def read_item(item_id: str, q: Union[str, None] = None, short: bool = False):
-    item = {"item_id": item_id}
-    if q:
-        item.update({"q": q})
-    if not short:
-        item.update(
-            {"description": "This is an amazing item that has a long description"}
-        )
-    return item

docs_src/query_params/tutorial004_py39.py

@@ -1,19 +0,0 @@
-from typing import Union
-
-from fastapi import FastAPI
-
-app = FastAPI()
-
-
-@app.get("/users/{user_id}/items/{item_id}")
-async def read_user_item(
-    user_id: int, item_id: str, q: Union[str, None] = None, short: bool = False
-):
-    item = {"item_id": item_id, "owner_id": user_id}
-    if q:
-        item.update({"q": q})
-    if not short:
-        item.update(
-            {"description": "This is an amazing item that has a long description"}
-        )
-    return item

docs_src/query_params/tutorial005_py310.py

@@ -0,0 +1,9 @@
+from fastapi import FastAPI
+
+app = FastAPI()
+
+
+@app.get("/items/{item_id}")
+async def read_user_item(item_id: str, needy: str):
+    item = {"item_id": item_id, "needy": needy}
+    return item

docs_src/query_params/tutorial006_py39.py

@@ -1,13 +0,0 @@
-from typing import Union
-
-from fastapi import FastAPI
-
-app = FastAPI()
-
-
-@app.get("/items/{item_id}")
-async def read_user_item(
-    item_id: str, needy: str, skip: int = 0, limit: Union[int, None] = None
-):
-    item = {"item_id": item_id, "needy": needy, "skip": skip, "limit": limit}
-    return item