from openai import OpenAI

client = OpenAI(base_url="http://127.0.0.1:18000/v1", api_key="ignored")

response = client.chat.completions.create(
    model="command-default",
    messages=[
        {"role": "system", "content": "回答要简洁。"},
        {"role": "user", "content": "用一句话解释递归。"},
    ],
    stream=False,
)

print(response.choices[0].message.content)