Qwen

pip install "pipecat-ai[qwen]"

from pipecat.services.qwen import QwenLLMService
from pipecat.processors.aggregators.openai_llm_context import OpenAILLMContext
from pipecat.adapters.schemas.function_schema import FunctionSchema
from pipecat.adapters.schemas.tools_schema import ToolsSchema
from pipecat.pipeline.pipeline import Pipeline
from pipecat.pipeline.task import PipelineParams, PipelineTask

# Configure service
llm = QwenLLMService(
    api_key="your-dashscope-api-key",
    model="qwen2.5-72b-instruct"  # Use a model with strong Chinese capabilities
)

# Define weather function using standardized schema
weather_function = FunctionSchema(
    name="get_current_weather",
    description="Get the current weather",
    properties={
        "location": {
            "type": "string",
            "description": "The city and state, e.g. Beijing, China"
        },
        "format": {
            "type": "string",
            "enum": ["celsius", "fahrenheit"],
            "description": "The temperature unit to use"
        }
    },
    required=["location", "format"]
)

# Create tools schema
tools = ToolsSchema(standard_tools=[weather_function])

# Create context with system message and tools
# Note the bilingual prompt for better Chinese support
context = OpenAILLMContext(
    messages=[
        {
            "role": "system",
            "content": "You are a helpful assistant in a voice conversation. "
                       "Keep responses concise. You can respond in Chinese when "
                       "the user speaks Chinese. 你是一个语音对话中的助手，保持简洁的回答。"
                       "当用户用中文交流时，你可以用中文回答。"
        }
    ],
    tools=tools
)

# Register function handlers
async def fetch_weather(function_name, tool_call_id, args, llm, context, result_callback):
    await result_callback({"conditions": "sunny", "temperature": "22°C"})

llm.register_function("get_current_weather", fetch_weather)

# Create context aggregator for message handling
context_aggregator = llm.create_context_aggregator(context)

# Set up pipeline
pipeline = Pipeline([
    transport.input(),
    context_aggregator.user(),
    llm,
    tts,
    transport.output(),
    context_aggregator.assistant()
])

# Create and configure task
task = PipelineTask(
    pipeline,
    params=PipelineParams(
        allow_interruptions=True,
        enable_metrics=True,
        enable_usage_metrics=True,
    ),
)