Claude 消息接口

import anthropic

client = anthropic.Anthropic(
    api_key="YOUR_API_KEY",
    base_url="https://aireiter.com/api"
)

message = client.messages.create(
    model="claude-sonnet-4-5-20250929",
    max_tokens=1024,
    messages=[
        {"role": "user", "content": "解释量子计算的基本原理"}
    ]
)

print(message.content[0].text)

message = client.messages.create(
    model="claude-sonnet-4-5-20250929",
    max_tokens=1024,
    system="你是一位资深 Python 开发专家，擅长代码审查和优化建议。",
    messages=[
        {"role": "user",      "content": "什么是装饰器？"},
        {"role": "assistant", "content": "装饰器是 Python 的语法糖，用于..."},
        {"role": "user",      "content": "能给我一个实际项目中的例子吗？"}
    ]
)

with client.messages.stream(
    model="claude-sonnet-4-5-20250929",
    max_tokens=1024,
    messages=[{"role": "user", "content": "写一篇关于 AI 的短文"}]
) as stream:
    for text in stream.text_stream:
        print(text, end="", flush=True)

# URL 图像
message = client.messages.create(
    model="claude-sonnet-4-5-20250929",
    max_tokens=1024,
    messages=[
        {
            "role": "user",
            "content": [
                {
                    "type": "image",
                    "source": {"type": "url", "url": "https://example.com/chart.png"}
                },
                {"type": "text", "text": "描述这张图表的趋势"}
            ]
        }
    ]
)

# Base64 图像
import base64

with open("image.jpg", "rb") as f:
    image_data = base64.b64encode(f.read()).decode("utf-8")

message = client.messages.create(
    model="claude-sonnet-4-5-20250929",
    max_tokens=1024,
    messages=[
        {
            "role": "user",
            "content": [
                {
                    "type": "image",
                    "source": {
                        "type": "base64",
                        "media_type": "image/jpeg",
                        "data": image_data
                    }
                },
                {"type": "text", "text": "分析这张图片"}
            ]
        }
    ]
)

event: ping
data: {"type":"ping"}

event: message_start
data: {"type":"message_start","message":{"id":"msg_xxx","type":"message","role":"assistant","content":[],"model":"claude-sonnet-4-5-20250929","stop_reason":null,"stop_sequence":null,"usage":{"input_tokens":25,"output_tokens":0}}}

event: content_block_start
data: {"type":"content_block_start","index":0,"content_block":{"type":"text","text":""}}

event: content_block_delta
data: {"type":"content_block_delta","index":0,"delta":{"type":"text_delta","text":"你好"}}

event: content_block_stop
data: {"type":"content_block_stop","index":0}

event: message_delta
data: {"type":"message_delta","delta":{"stop_reason":"end_turn","stop_sequence":null},"usage":{"output_tokens":18}}

event: message_stop
data: {"type":"message_stop"}