|
| 1 | +import json |
| 2 | +import re |
| 3 | +import requests |
| 4 | + |
| 5 | +def get_current_weather(location: str, unit: str = "celsius"): |
| 6 | + """Mock weather data function""" |
| 7 | + # Hardcoded response for demo purposes |
| 8 | + return { |
| 9 | + "location": location, |
| 10 | + "temperature": 22 if unit == "celsius" else 72, |
| 11 | + "unit": unit, |
| 12 | + "forecast": "Sunny with light clouds" |
| 13 | + } |
| 14 | + |
| 15 | +def try_parse_tool_calls(content: str): |
| 16 | + """Try parse the tool calls.""" |
| 17 | + tool_calls = [] |
| 18 | + offset = 0 |
| 19 | + for i, m in enumerate(re.finditer(r"<tool_call>\n(.+)?\n</tool_call>", content)): |
| 20 | + if i == 0: |
| 21 | + offset = m.start() |
| 22 | + try: |
| 23 | + func = json.loads(m.group(1)) |
| 24 | + tool_calls.append({"type": "function", "function": func}) |
| 25 | + if isinstance(func["arguments"], str): |
| 26 | + func["arguments"] = json.loads(func["arguments"]) |
| 27 | + except json.JSONDecodeError as e: |
| 28 | + print(f"Failed to parse tool calls: the content is {m.group(1)} and {e}") |
| 29 | + pass |
| 30 | + if tool_calls: |
| 31 | + if offset > 0 and content[:offset].strip(): |
| 32 | + c = content[:offset] |
| 33 | + else: |
| 34 | + c = "" |
| 35 | + return {"role": "assistant", "content": c, "tool_calls": tool_calls} |
| 36 | + return {"role": "assistant", "content": re.sub(r"<\|im_end\|>$", "", content)} |
| 37 | + |
| 38 | +def chat_completion(messages): |
| 39 | + """Send chat completion request to local server""" |
| 40 | + response = requests.post( |
| 41 | + "http://localhost:52415/v1/chat/completions", |
| 42 | + json={ |
| 43 | + "model": "qwen-2.5-1.5b", |
| 44 | + "messages": messages, |
| 45 | + "tools": [{ |
| 46 | + "type": "function", |
| 47 | + "function": { |
| 48 | + "name": "get_current_weather", |
| 49 | + "description": "Get the current weather in a given location", |
| 50 | + "parameters": { |
| 51 | + "type": "object", |
| 52 | + "properties": { |
| 53 | + "location": { |
| 54 | + "type": "string", |
| 55 | + "description": "The city and state, e.g. San Francisco, CA" |
| 56 | + }, |
| 57 | + "unit": { |
| 58 | + "type": "string", |
| 59 | + "enum": ["celsius", "fahrenheit"] |
| 60 | + } |
| 61 | + }, |
| 62 | + "required": ["location"] |
| 63 | + } |
| 64 | + } |
| 65 | + }], |
| 66 | + "tool_choice": "auto" |
| 67 | + } |
| 68 | + ) |
| 69 | + return response.json() |
| 70 | + |
| 71 | +def main(): |
| 72 | + # Initial conversation |
| 73 | + messages = [{ |
| 74 | + "role": "user", |
| 75 | + "content": "Hi there, what's the weather in Boston?" |
| 76 | + }] |
| 77 | + |
| 78 | + # Get initial response |
| 79 | + response = chat_completion(messages) |
| 80 | + print(f"First response: {response}") |
| 81 | + assistant_message = try_parse_tool_calls(response["choices"][0]["message"]["content"]) |
| 82 | + messages.append(assistant_message) |
| 83 | + |
| 84 | + # If there are tool calls, execute them and continue conversation |
| 85 | + if "tool_calls" in assistant_message: |
| 86 | + for tool_call in assistant_message["tool_calls"]: |
| 87 | + if tool_call["function"]["name"] == "get_current_weather": |
| 88 | + args = tool_call["function"]["arguments"] |
| 89 | + weather_data = get_current_weather(**args) |
| 90 | + |
| 91 | + # Add tool response to messages |
| 92 | + messages.append({ |
| 93 | + "role": "tool", |
| 94 | + "content": json.dumps(weather_data), |
| 95 | + "name": tool_call["function"]["name"] |
| 96 | + }) |
| 97 | + |
| 98 | + # Get final response with weather data |
| 99 | + response = chat_completion(messages) |
| 100 | + print(f"Final response: {response}") |
| 101 | + messages.append({ |
| 102 | + "role": "assistant", |
| 103 | + "content": response["choices"][0]["message"]["content"] |
| 104 | + }) |
| 105 | + |
| 106 | + # Print full conversation |
| 107 | + for msg in messages: |
| 108 | + print(f"\n{msg['role'].upper()}: {msg['content']}") |
| 109 | + |
| 110 | +if __name__ == "__main__": |
| 111 | + main() |
0 commit comments