app.py

import gradio as gr
import os
from openai import OpenAI

# 读取环境变量
DASHSCOPE_API_KEY = os.getenv("DASHSCOPE_API_KEY")  # 从环境变量读取 API Key
DASHSCOPE_API_URL = "https://dashscope.aliyuncs.com/compatible-mode/v1"

# 设置 DashScope API 客户端
client = OpenAI(
    api_key=DASHSCOPE_API_KEY,
    base_url=DASHSCOPE_API_URL
)

# 定义对话函数
def answer(question, history):
    if history is None:
        history = []

    # 将历史记录与用户输入合并
    messages = [{'role': 'user', 'content': question}]
    
    # 向 DashScope API 发送请求
    try:
        completion = client.chat.completions.create(
            model="deepseek-r1",  # 使用 DeepSeek-R1 模型
            messages=messages
        )

        # 获取思考过程与最终答案
        reasoning_content = completion.choices[0].message.get("reasoning_content", "没有思考过程")
        bot_response = completion.choices[0].message["content"]

        # 输出思考过程与最终答案（用于调试）
        print("思考过程：", reasoning_content)
        print("最终答案：", bot_response)

        # 更新历史记录
        history.append({"role": "user", "content": question})
        history.append({"role": "assistant", "content": bot_response})

        return history, history

    except Exception as e:
        print("API 请求失败：", e)
        return history, history  # 返回空的 history


# 创建 Gradio 界面
with gr.Blocks(css="""
    #chatbot {
        height: 400px;
        background-color: #f7f7f7;
        border-radius: 10px;
        padding: 20px;
        box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    }
    .gradio-container {
        background-color: #212121;
        border-radius: 20px;
        padding: 40px;
    }
    .gr-button {
        background-color: #4CAF50;
        color: white;
        border-radius: 10px;
        padding: 10px 20px;
        border: none;
        font-weight: bold;
    }
    .gr-button:hover {
        background-color: #45a049;
    }
    .gr-chatbot {
        font-family: 'Arial', sans-serif;
        height: 400px;
    }
    .chatbot-message {
        margin: 10px;
        padding: 10px;
        border-radius: 15px;
        background-color: #e1f5fe;
    }
    .user-message {
        background-color: #a5d6a7;
        color: #ffffff;
    }
    .assistant-message {
        background-color: #e3f2fd;
        color: #000000;
    }
    input[type="text"] {
        font-size: 16px;
        border-radius: 10px;
        padding: 10px;
        width: 100%;
    }
    .gradio-container .gr-chatbot .overflow-y-auto {
        max-height: 500px;
    }
""") as demo:
    chatbot = gr.Chatbot(elem_id="chatbot", type="messages")  # 使用 Gradio 的聊天组件
    state = gr.State([])

    with gr.Row():
        txt = gr.Textbox(placeholder="请输入您的问题，并按回车发送", lines=1)

    txt.submit(answer, [txt, state], [chatbot, state])

demo.launch()