📝 Add tutorials python src files

docs/tutorial/src/tutorial70.py

@@ -0,0 +1,11 @@
+from fastapi import FastAPI, Security
+from fastapi.security import OAuth2PasswordBearer
+
+app = FastAPI()
+
+oauth2_scheme = OAuth2PasswordBearer(tokenUrl="/token")
+
+
+@app.get("/items/")
+async def read_items(token: str = Security(oauth2_scheme)):
+    return {"token": token}