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

docs_src/path_params/tutorial005_py310.py

@@ -0,0 +1,23 @@
+from enum import Enum
+
+from fastapi import FastAPI
+
+
+class ModelName(str, Enum):
+    alexnet = "alexnet"
+    resnet = "resnet"
+    lenet = "lenet"
+
+
+app = FastAPI()
+
+
+@app.get("/models/{model_name}")
+async def get_model(model_name: ModelName):
+    if model_name is ModelName.alexnet:
+        return {"model_name": model_name, "message": "Deep Learning FTW!"}
+
+    if model_name.value == "lenet":
+        return {"model_name": model_name, "message": "LeCNN all the images"}
+
+    return {"model_name": model_name, "message": "Have some residuals"}