✨ Add support for function return type annotations to declare the response_model (#1436)

Co-authored-by: Sebastián Ramírez <tiangolo@gmail.com>

docs_src/response_model/tutorial003.py

@@ -1,4 +1,4 @@
-from typing import Union
+from typing import Any, Union
 
 from fastapi import FastAPI
 from pydantic import BaseModel, EmailStr
@@ -20,5 +20,5 @@ class UserOut(BaseModel):
 
 
 @app.post("/user/", response_model=UserOut)
-async def create_user(user: UserIn):
+async def create_user(user: UserIn) -> Any:
     return user