如何用另一个swagger文档扩展FastAPI文档？

pip install fastapi
pip install uvicorn

from fastapi import FastAPI
import yaml

with open("path/to/another/swagger.yaml", "r") as file:
    another_swagger = yaml.safe_load(file)

app = FastAPI()

@app.get("/docs")
def get_docs():
    # 获取FastAPI生成的文档
    docs = app.openapi()
    
    # 将另一个Swagger文档中的路径和操作添加到FastAPI文档中
    for path, path_item in another_swagger.get("paths", {}).items():
        if path not in docs.get("paths", {}):
            docs["paths"][path] = path_item
        else:
            for method, operation in path_item.items():
                if method not in docs["paths"][path]:
                    docs["paths"][path][method] = operation
    
    return docs