Add chat functionality with OpenAI API and configuration support

.gitignore

@@ -141,3 +141,5 @@ dmypy.json
 *.yml
 *.conf
 !*.example.yaml
+*.jsonl
+tiktokencache

chat.py

@@ -0,0 +1,180 @@
+import openai
+import yaml
+import argparse
+import asyncio
+import json
+from typing import Optional
+
+
+class Config:
+    def __init__(self, args, yaml_config):
+        self._args = args
+        self._cfg = cfg
+
+    @property
+    def model(self) -> str:
+        if self._args.model:
+            return self._args.model
+        if 'model' in self._cfg and isinstance(self._cfg['model'], str):
+            return self._cfg['model']
+        return 'gpt-4o-mini'
+
+    @property
+    def max_completion_tokens(self) -> int:
+        if self._args.max_completion_tokens:
+            return self._args.max_completion_tokens
+        if 'max_completion_tokens' in self._cfg and isinstance(self._cfg['max_completion_tokens'], int):  # noqa: E501
+            return self._cfg['max_completion_tokens']
+        return 4096
+
+    @property
+    def include_usage(self) -> bool:
+        if self._args.include_usage:
+            return self._args.include_usage
+        if 'include_usage' in self._cfg and isinstance(self._cfg['include_usage'], bool):  # noqa: E501
+            return self._cfg['include_usage']
+        return False
+
+    @property
+    def output(self) -> Optional[str]:
+        if self._args.output:
+            return self._args.output
+        if 'output' in self._cfg and isinstance(self._cfg['output'], str):
+            return self._cfg['output']
+        return None
+
+    @property
+    def temperature(self) -> float:
+        if self._args.temperature:
+            if self._args.temperature >= 0.0 and self._args.temperature <= 2.0:
+                return self._args.temperature
+        if 'temperature' in self._cfg and isinstance(self._cfg['temperature'], float):  # noqa: E501
+            temperature = self._cfg['temperature']
+            if temperature >= 0.0 and temperature <= 2.0:
+                return temperature
+        return 1.0
+
+    @property
+    def top_p(self) -> float:
+        if self._args.top_p:
+            if self._args.top_p >= 0.0 and self._args.top_p <= 1.0:
+                return self._args.top_p
+        if 'top_p' in self._cfg and isinstance(self._cfg['top_p'], float):
+            top_p = self._cfg['top_p']
+            if top_p >= 0.0 and top_p <= 1.0:
+                return top_p
+        return 1.0
+
+    @property
+    def presence_penalty(self) -> float:
+        if self._args.presence_penalty:
+            if self._args.presence_penalty >= -2.0 and self._args.presence_penalty <= 2.0:  # noqa: E501
+                return self._args.presence_penalty
+        if 'presence_penalty' in self._cfg and isinstance(self._cfg['presence_penalty'], float):  # noqa: E501
+            presence_penalty = self._cfg['presence_penalty']
+            if presence_penalty >= -2.0 and presence_penalty <= 2.0:
+                return presence_penalty
+        return 0.0
+
+    @property
+    def store(self) -> bool:
+        if self._args.store:
+            return self._args.store
+        if 'store' in self._cfg and isinstance(self._cfg['store'], bool):
+            return self._cfg['store']
+        return False
+
+
+def load_config(file_path):
+    with open(file_path, 'r', encoding='utf-8') as file:
+        config = yaml.safe_load(file)
+    openai.api_key = config['api_key']
+    openai.base_url = config['base_url']
+    return config
+
+
+def get_user_prompt():
+    prompt = ""
+    print("Enter your prompt (leave empty to finish):")
+    while True:
+        line = input('')
+        if line.strip() == "":
+            break
+        prompt += line + "\n"
+    return prompt.strip()
+
+
+async def stream_response(messages, prompt, args: Config):
+    client = openai.AsyncClient(api_key=openai.api_key,
+                                base_url=openai.base_url)
+    messages.append({"role": "user", "content": prompt})
+    response = await client.chat.completions.create(
+        model=args.model,
+        max_completion_tokens=args.max_completion_tokens,
+        messages=messages,
+        stream_options={"include_usage": args.include_usage},
+        temperature=args.temperature,
+        top_p=args.top_p,
+        presence_penalty=args.presence_penalty,
+        store=args.store,
+        stream=True
+    )
+    res = ''
+    async for chunk in response:
+        if chunk.choices:
+            choice = chunk.choices[0]
+            if choice.delta and choice.delta.content:
+                data = choice.delta.content
+                res += data
+                print(data, end='', flush=True)
+    print(flush=True)
+    if chunk.usage:
+        print(f"Usage: {chunk.usage.to_json(indent=None)}")
+    return {'role': 'assistant', 'content': res}
+
+
+async def chat(args: Config):
+    messages = []
+    while True:
+        try:
+            user_prompt = get_user_prompt()
+        except KeyboardInterrupt:
+            break
+        while True:
+            try:
+                res = await stream_response(messages, user_prompt, args)
+                messages.append(res)
+                break
+            except KeyboardInterrupt:
+                break
+            except openai.InternalServerError:
+                print("Internal server error, retrying...")
+                continue
+    if args.output and len(messages):
+        save_to_jsonl(args.output, messages)
+
+
+def save_to_jsonl(file_path, message):
+    with open(file_path, 'a', encoding='utf-8') as f:
+        json.dump({'messages': message}, f, ensure_ascii=False,
+                  separators=(',', ':'))
+        f.write('\n')
+
+
+parser = argparse.ArgumentParser(description="Chat with OpenAI's model.")
+parser.add_argument('-m', '--model', type=str, help='Chat model to use')  # noqa: E501
+parser.add_argument('-M', '--max-completion-tokens', type=int, help='Maximum length of the response')  # noqa: E501
+parser.add_argument('-c', '--config', type=str, default='./chat.yml', help='Path to the configuration file')  # noqa: E501
+parser.add_argument('-o', '--output', type=str, help='Path to the output JSONL file')  # noqa: E501
+parser.add_argument('-i', '--include-usage', action='store_true', help='Include usage information in the response')  # noqa: E501
+parser.add_argument('-t', '--temperature', type=float, help='What sampling temperature to use, between 0 and 2. Higher values like 0.8 will make the output more random, while lower values like 0.2 will make it more focused and deterministic. ')  # noqa: E501
+parser.add_argument('-p', '--top-p', type=float, help='An alternative to sampling with temperature, called nucleus sampling, where the model considers the results of the tokens with top_p probability mass. So 0.1 means only the tokens comprising the top 10% probability mass are considered.')  # noqa: E501
+parser.add_argument('-P', '--presence-penalty', type=float, help="Number between -2.0 and 2.0. Positive values penalize new tokens based on whether they appear in the text so far, increasing the model's likelihood to talk about new topics.")  # noqa: E501
+parser.add_argument('-s', '--store', action='store_true', help='Whether or not to store the output of this chat completion request for use in our model distillation or evals products.')  # noqa: E501
+
+
+if __name__ == "__main__":
+    args = parser.parse_args()
+    cfg = load_config(args.config)
+    acfg = Config(args, cfg)
+    asyncio.run(chat(acfg))