Object of type list_iterator is not JSON serializable

[leoterry-ulrica]

• [x] This is actually a bug report.
• [x] I am not getting good LLM Results
• [x] I have tried asking for help in the community on discord or discussions and have not received a response.
• [x] I have tried searching the documentation and have not found an answer.

What Model are you using?

• [ ] gpt-3.5-turbo
• [ ] gpt-4-turbo
• [ ] gpt-4
• [x] qwen2-72b
• [ ] Other (please specify)

Describe the bug

2024-08-31 13:28:58,102 xinference.core.model 3678673 DEBUG    Enter wrapped_func, args: (<xinference.core.model.ModelActor object at 0x7a7d98a89ad0>, 'John Doe is 30 years old.', '', [], {'tool_choice': {'function': {'name': 'UserInfo'}, 'type': 'function'}, 'tools': <list_iterator object at 0x7a7d92bb3400>}), kwargs: {'raw_params': {'tool_choice': {'type': 'function', 'function': {'name': 'UserInfo'}}, 'tools': [{'type': 'function', 'function': {'name': 'UserInfo', 'description': 'Correctly extracted `UserInfo` with all the required parameters with correct types', 'parameters': {'properties': {'name': {'title': 'Name', 'type': 'string'}, 'age': {'title': 'Age', 'type': 'integer'}}, 'required': ['age', 'name'], 'type': 'object'}}}]}}
2024-08-31 13:28:58,102 xinference.core.model 3678673 DEBUG    Request chat, current serve request count: 0, request limit: None for the model qwen2-instruct
2024-08-31 13:28:58,102 xinference.model.llm.sglang.core 3678673 DEBUG    Enter generate, prompt: <|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
John Doe is 30 years old.<|im_end|>
<|im_start|>assistant
, generate config: {'tool_choice': {'function': {'name': 'UserInfo'}, 'type': 'function'}, 'tools': <list_iterator object at 0x7a7d92bb3400>, 'stop': ['<|endoftext|>', '<|im_start|>', '<|im_end|>'], 'presence_penalty': 0.0, 'frequency_penalty': 0.0, 'temperature': 1.0, 'top_p': 1.0, 'top_k': -1, 'max_new_tokens': 256, 'stream': False, 'stream_options': None, 'ignore_eos': False}
2024-08-31 13:28:58,103 xinference.core.model 3678673 DEBUG    After request chat, current serve request count: 0 for the model qwen2-instruct
2024-08-31 13:28:58,110 xinference.api.restful_api 3472060 ERROR    [address=0.0.0.0:46209, pid=3678673] Object of type list_iterator is not JSON serializable
Traceback (most recent call last):
  File "/root/miniconda3/envs/xin-0.14.4/lib/python3.10/site-packages/xinference/api/restful_api.py", line 1752, in create_chat_completion
    data = await model.chat(
  File "/root/miniconda3/envs/xin-0.14.4/lib/python3.10/site-packages/xoscar/backends/context.py", line 231, in send
    return self._process_result_message(result)
  File "/root/miniconda3/envs/xin-0.14.4/lib/python3.10/site-packages/xoscar/backends/context.py", line 102, in _process_result_message
    raise message.as_instanceof_cause()
  File "/root/miniconda3/envs/xin-0.14.4/lib/python3.10/site-packages/xoscar/backends/pool.py", line 656, in send
    result = await self._run_coro(message.message_id, coro)
  File "/root/miniconda3/envs/xin-0.14.4/lib/python3.10/site-packages/xoscar/backends/pool.py", line 367, in _run_coro
    return await coro
  File "/root/miniconda3/envs/xin-0.14.4/lib/python3.10/site-packages/xoscar/api.py", line 384, in __on_receive__
    return await super().__on_receive__(message)  # type: ignore
  File "xoscar/core.pyx", line 558, in __on_receive__
    raise ex
  File "xoscar/core.pyx", line 520, in xoscar.core._BaseActor.__on_receive__
    async with self._lock:
  File "xoscar/core.pyx", line 521, in xoscar.core._BaseActor.__on_receive__
    with debug_async_timeout('actor_lock_timeout',
  File "xoscar/core.pyx", line 526, in xoscar.core._BaseActor.__on_receive__
    result = await result
  File "/root/miniconda3/envs/xin-0.14.4/lib/python3.10/site-packages/xinference/core/utils.py", line 45, in wrapped
    ret = await func(*args, **kwargs)
  File "/root/miniconda3/envs/xin-0.14.4/lib/python3.10/site-packages/xinference/core/model.py", line 90, in wrapped_func
    ret = await fn(self, *args, **kwargs)
  File "/root/miniconda3/envs/xin-0.14.4/lib/python3.10/site-packages/xoscar/api.py", line 462, in _wrapper
    r = await func(self, *args, **kwargs)
  File "/root/miniconda3/envs/xin-0.14.4/lib/python3.10/site-packages/xinference/core/model.py", line 536, in chat
    response = await self._call_wrapper_json(
  File "/root/miniconda3/envs/xin-0.14.4/lib/python3.10/site-packages/xinference/core/model.py", line 401, in _call_wrapper_json
    return await self._call_wrapper("json", fn, *args, **kwargs)
  File "/root/miniconda3/envs/xin-0.14.4/lib/python3.10/site-packages/xinference/core/model.py", line 114, in _async_wrapper
    return await fn(*args, **kwargs)
  File "/root/miniconda3/envs/xin-0.14.4/lib/python3.10/site-packages/xinference/core/model.py", line 410, in _call_wrapper
    ret = await fn(*args, **kwargs)
  File "/root/miniconda3/envs/xin-0.14.4/lib/python3.10/site-packages/xinference/model/llm/sglang/core.py", line 440, in async_chat
    c = await self.async_generate(full_prompt, generate_config)  # type: ignore
  File "/root/miniconda3/envs/xin-0.14.4/lib/python3.10/site-packages/xinference/model/llm/sglang/core.py", line 338, in async_generate
    state = await self._non_stream_generate(prompt, **sanitized_generate_config)
  File "/root/miniconda3/envs/xin-0.14.4/lib/python3.10/site-packages/xinference/model/llm/sglang/core.py", line 313, in _non_stream_generate
    async with session.post(
  File "/root/miniconda3/envs/xin-0.14.4/lib/python3.10/site-packages/aiohttp/client.py", line 1353, in __aenter__
    self._resp = await self._coro
  File "/root/miniconda3/envs/xin-0.14.4/lib/python3.10/site-packages/aiohttp/client.py", line 499, in _request
    data = payload.JsonPayload(json, dumps=self._json_serialize)
  File "/root/miniconda3/envs/xin-0.14.4/lib/python3.10/site-packages/aiohttp/payload.py", line 397, in __init__
    dumps(value).encode(encoding),
  File "/root/miniconda3/envs/xin-0.14.4/lib/python3.10/json/__init__.py", line 231, in dumps
    return _default_encoder.encode(obj)
  File "/root/miniconda3/envs/xin-0.14.4/lib/python3.10/json/encoder.py", line 199, in encode
    chunks = self.iterencode(o, _one_shot=True)
  File "/root/miniconda3/envs/xin-0.14.4/lib/python3.10/json/encoder.py", line 257, in iterencode
    return _iterencode(o, 0)
  File "/root/miniconda3/envs/xin-0.14.4/lib/python3.10/json/encoder.py", line 179, in default
    raise TypeError(f'Object of type {o.__class__.__name__} '
TypeError: [address=0.0.0.0:46209, pid=3678673] Object of type list_iterator is not JSON serializable

To Reproduce

import instructor
from pydantic import BaseModel
from openai import OpenAI


# Define your desired output structure
class UserInfo(BaseModel):
    name: str
    age: int


# Patch the OpenAI client
client = instructor.from_openai(OpenAI(base_url="http://ip:port/v1"), mode=instructor.Mode.TOOLS)

# Extract structured data from natural language
user_info = client.chat.completions.create(
    model="qwen2-instruct",
    response_model=UserInfo,
    messages=[{"role": "user", "content": "John Doe is 30 years old."}],
    max_retries=2
)

print(user_info.name)
#> John Doe
print(user_info.age)
#> 30

Expected behavior

print(user_info.name)
#> John Doe
print(user_info.age)
#> 30

Screenshots If applicable, add screenshots to help explain your problem.