语言模型 (LLM)

import os
from openai import OpenAI

client = OpenAI(
    api_key=os.environ["NONELINEAR_API_KEY"],
    base_url="https://api.nonelinear.com.cn/v1"
)

response = client.chat.completions.create(
    model="DeepSeek-V3.2",
    messages=[
        {"role": "system", "content": "You are a helpful assistant."},
        {"role": "user", "content": "用三句话介绍递归。"}
    ],
    stream=True
)

for chunk in response:
    # 有些流式 chunk 可能没有 choices，比如 usage chunk、心跳、兼容层特殊事件
    if not chunk.choices:
        continue

    delta = chunk.choices[0].delta

    # 有些 chunk 有 delta，但没有 content
    content = getattr(delta, "content", None)
    if content:
        print(content, end="", flush=True)