use client or legacy under jupyter lab will have error: RuntimeError: asyncio.run() cannot be called from a running event loop

[loverubywithout]

Bug description

g4f version: version: 0.4.6.2 or 0.4.7.3
I use client API or legacy API, will encountered error or warning.
If I use AsyncClient, it's ok, no error, no warning.

---

run environment: command line

from g4f.client import Client as OpenAI

message, response_format, model_id = df_prompts.iloc[0, 1:]
provider, model = df_models.iloc[model_id, :]

client = OpenAI(
    provider=dict_providers[provider]
)

r = client.chat.completions.create(
    model=model,
    messages=message,
    response_format=response_format
)

I can get the answer, but have warning:

E:\Anaconda\envs\ai\lib\site-packages\curl_cffi\aio.py:137: RuntimeWarning:
    Proactor event loop does not implement add_reader family of methods required.
    Registering an additional selector thread for add_reader support.
    To avoid this warning use:
        asyncio.set_event_loop_policy(WindowsSelectorEventLoopPolicy())

  self.loop = _get_selector(loop if loop is not None else asyncio.get_running_loop())

---

run environment: jupyter lab

legacy API

# dict_providers[provider] is g4f.Provider.DeepInfraChat.DeepInfraChat

r = g4f.ChatCompletion.create(
    provider = dict_providers[provider],
    model = 'deepseek-v3',
    messages = message,
    response_format = response_format,
)

---------------------------------------------------------------------------
RuntimeError                              Traceback (most recent call last)
Cell In[15], line 4
      1 message, response_format, model_id = df_prompts.iloc[0, 1:]
      2 provider, model = df_models.iloc[model_id, :]
----> 4 r = g4f.ChatCompletion.create(
      5     provider = dict_providers[provider],
      6     model = 'deepseek-v3',
      7     messages = message,
      8     response_format = response_format,
      9 )

File [e:\develop\github\ai\gpt4free\g4f\__init__.py:53](file:///E:/develop/github/ai/gpt4free/g4f/__init__.py#line=52), in ChatCompletion.create(model, messages, provider, stream, image, image_name, ignore_working, ignore_stream, **kwargs)
     49     kwargs["ignore_stream"] = True
     51 result = provider.get_create_function()(model, messages, stream=stream, **kwargs)
---> 53 return result if stream else concat_chunks(result)

File [e:\develop\github\ai\gpt4free\g4f\providers\helper.py:99](file:///E:/develop/github/ai/gpt4free/g4f/providers/helper.py#line=98), in concat_chunks(chunks)
     98 def concat_chunks(chunks: Iterator) -> str:
---> 99     return "".join([
    100         str(chunk) for chunk in chunks
    101         if chunk and not isinstance(chunk, Exception)
    102     ])

File [e:\develop\github\ai\gpt4free\g4f\providers\helper.py:99](file:///E:/develop/github/ai/gpt4free/g4f/providers/helper.py#line=98), in <listcomp>(.0)
     98 def concat_chunks(chunks: Iterator) -> str:
---> 99     return "".join([
    100         str(chunk) for chunk in chunks
    101         if chunk and not isinstance(chunk, Exception)
    102     ])

File [e:\develop\github\ai\gpt4free\g4f\providers\asyncio.py:45](file:///E:/develop/github/ai/gpt4free/g4f/providers/asyncio.py#line=44), in to_sync_generator(generator, stream)
     43 def to_sync_generator(generator: AsyncIterator, stream: bool = True) -> Iterator:
     44     if not stream:
---> 45         yield from asyncio.run(async_generator_to_list(generator))
     46         return
     48     loop = get_running_loop(check_nested=False)

File [E:\Anaconda\envs\ai\lib\asyncio\runners.py:33](file:///E:/Anaconda/envs/ai/lib/asyncio/runners.py#line=32), 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

---

[hlohaus]

Please disregard this warning; currently, there is no workaround when using curl_cffi on Windows. @loverubywithout