报错asyncio.run() cannot be called from a running event loop，辛苦大佬们看看

[chaoskklt]

报错 asyncio.run() cannot be called from a running event loop
再autodl上进行配置的

---

日志如下：

RuntimeError Traceback (most recent call last)
Cell In[2], line 89
85 model = AutoModelForCausalLM.from_pretrained(model_name_or_path, device_map="auto", torch_dtype=torch.bfloat16).cuda()
87 # 启动FastAPI应用
88 # 用6006端口可以将autodl的端口映射到本地，从而在本地使用api
---> 89 uvicorn.run(app, host='0.0.0.0', port=6006, workers=1) # 在指定端口和主机上启动应用

File ~/miniconda3/lib/python3.10/site-packages/uvicorn/main.py:575, in run(app, host, port, uds, fd, loop, http, ws, ws_max_size, ws_max_queue, ws_ping_interval, ws_ping_timeout, ws_per_message_deflate, lifespan, interface, reload, reload_dirs, reload_includes, reload_excludes, reload_delay, workers, env_file, log_config, log_level, access_log, proxy_headers, server_header, date_header, forwarded_allow_ips, root_path, limit_concurrency, backlog, limit_max_requests, timeout_keep_alive, timeout_graceful_shutdown, ssl_keyfile, ssl_certfile, ssl_keyfile_password, ssl_version, ssl_cert_reqs, ssl_ca_certs, ssl_ciphers, headers, use_colors, app_dir, factory, h11_max_incomplete_event_size)
573 Multiprocess(config, target=server.run, sockets=[sock]).run()
574 else:
--> 575 server.run()
576 if config.uds and os.path.exists(config.uds):
577 os.remove(config.uds) # pragma: py-win32

File ~/miniconda3/lib/python3.10/site-packages/uvicorn/server.py:65, in Server.run(self, sockets)
63 def run(self, sockets: list[socket.socket] | None = None) -> None:
64 self.config.setup_event_loop()
---> 65 return asyncio.run(self.serve(sockets=sockets))

File ~/miniconda3/lib/python3.10/asyncio/runners.py:33, in run(main, debug)
9 """Execute the coroutine and return the result.
10
11 This function runs the passed coroutine, taking care of
(...)
30 asyncio.run(main())
31 """
32 if events._get_running_loop() is not None:
---> 33 raise RuntimeError(
34 "asyncio.run() cannot be called from a running event loop")
36 if not coroutines.iscoroutine(main):
37 raise ValueError("a coroutine was expected, got {!r}".format(main))

RuntimeError: asyncio.run() cannot be called from a running event loop

[KMnO4-zx]

fastapi 不要在jupyter notebook里运行

[chaoskklt]

谢谢大佬深夜回答，我是小白。我在autodl只找到用jupyter notebook 编写和运行代码的地方。大佬能否再细致讲解一下

[KMnO4-zx]

在左侧界面 右键“创建文件” xxx.py 你可以自己摸索摸索

[chaoskklt]

谢谢

[KMnO4-zx]

[107350qin]

fastapi启动之后本身系统就在一个事件循环中，你不能再创建其他事件了。
你可以把
uvicorn.run(app, host='0.0.0.0', port=6006, workers=1)
注释掉，使用
asyncio.run(hello())
来运行指定方法