dino-ai-py 0.2.1

Unified LLM API with automatic model discovery, structured errors, and composable middleware

## 🦖 Dino Ai

统一的 Python LLM API。多厂商、中间件管道、异步优先、零必选依赖。

Built with DeepSeek V4 Pro — 本项目代码由 DeepSeek V4 Pro 辅助生成。

English

特性

• 统一接口 — 一套 API 调用 OpenAI、Anthropic、Google Gemini、AWS Bedrock、Mistral、DeepSeek、xAI 等 30+ 厂商
• 822 个预置模型 — 从 models.dev 自动拉取，开箱即用
• 双协议支持 — 厂商支持多套 API 时（如 Xiaomi 同时支持 OpenAI 和 Anthropic 协议），同时提供两种变体
• 流式事件 — 异步迭代器逐块返回文本、思维链、工具调用
• 中间件管道 — 日志、重试、费用上限，可自由组合或自定义
• 结构化错误 — 12 种 ErrorCategory，统一处理速率限制、上下文溢出等
• 跨厂商上下文传递 — 在不同模型之间无缝切换对话
• @tool 装饰器 — 从类型标注自动生成 JSON Schema
• 零必选依赖 — httpx / boto3 按需懒加载
• 完整类型标注 — py.typed + mypy strict 通过

安装

pip install dino-ai-py

按厂商安装可选依赖：

pip install "dino-ai-py[openai]"      # OpenAI / DeepSeek / Groq / xAI / Together / Mistral 等
pip install "dino-ai-py[anthropic]"   # Anthropic Claude
pip install "dino-ai-py[google]"      # Google Gemini
pip install "dino-ai-py[bedrock]"     # AWS Bedrock (boto3)
pip install "dino-ai-py[all]"         # 全部

快速开始

import asyncio
from dino_ai import DinoClient, Context, UserMessage
from dino_ai.providers.openai_completions import OpenAICompletionsProvider
from dino_ai.providers.anthropic import AnthropicProvider

# 创建客户端，注册你需要的厂商
client = DinoClient(providers=[
    OpenAICompletionsProvider(),
    AnthropicProvider(),
])

async def main():
    context = Context(messages=[UserMessage(content="用一句话解释量子纠缠")])

    # 方式 1: 直接 await 获取完整回复
    message = await client.complete("gpt-4o", context)
    print(message.text)

    # 方式 2: 流式逐块接收
    stream = client.stream("claude-sonnet-4-0", context)
    async for event in stream:
        print(event)

asyncio.run(main())

核心概念

模型

822 个模型常量，按厂商分组。每个厂商一个独立文件，按需导入：

from dino_ai.models import Openai, Anthropic, Google, Deepseek

model = Openai.GPT_4O               # gpt-4o
model = Anthropic.CLAUDE_SONNET_4_0  # claude-sonnet-4-0
model = Google.GEMINI_2_5_PRO        # gemini-2.5-pro
model = Deepseek.DEEPSEEK_V4_PRO     # deepseek-v4-pro
message = await client.complete("gpt-4o", context)

每个 Model 包含能力声明、上下文窗口、定价等元信息：

model = Openai.GPT_4O
print(model.capabilities.vision)       # True
print(model.limits.context_window)     # 128000
print(model.pricing.input)             # 2.5 ($/M tokens)

浏览所有模型：

from dino_ai.models import ALL_MODELS

# 列出所有厂商
providers = sorted(set(m.provider for m in ALL_MODELS))
print(providers)

# 按厂商筛选
openai_models = [m for m in ALL_MODELS if m.provider == "openai"]
for m in openai_models[:5]:
    print(f"{m.id}: {m.name}")

双协议厂商 — 同一个厂商的不同 API 协议作为独立 provider：

from dino_ai.models._xiaomi import Xiaomi           # OpenAI 兼容协议
from dino_ai.models._xiaomi_anthropic import XiaomiAnthropic  # Anthropic 协议

# 模型列表相同，API 协议和 base URL 不同
print(Xiaomi.MIMO_V2_5_PRO.api)           # openai-completions
print(XiaomiAnthropic.MIMO_V2_5_PRO.api)  # anthropic-messages

上下文与消息

from dino_ai import Context, UserMessage, AssistantMessage, ToolResultMessage, Tool, TextContent

# 简单对话
context = Context(
    system_prompt="你是一个翻译助手。",
    messages=[UserMessage(content="Translate 'hello' to Japanese")],
)

# 多轮对话
context = Context(messages=[
    UserMessage(content="What is 2+2?"),
    AssistantMessage(content=[TextContent(text="4")]),
    UserMessage(content="And 3+3?"),
])

# 带工具定义
context = Context(
    messages=[UserMessage(content="What's the weather in Tokyo?")],
    tools=[
        Tool(name="get_weather", description="Get weather for a city",
             parameters={"type": "object", "properties": {"city": {"type": "string"}}, "required": ["city"]}),
    ],
)

流式事件

stream() 返回 EventStream，可异步迭代，事件类型包括：

事件	说明
StreamStart	流开始
TextStart / TextDelta / TextEnd	文本内容块
ThinkingStart / ThinkingDelta / ThinkingEnd	思维链/推理
ToolCallStart / ToolCallDelta / ToolCallEnd	工具调用
StreamDone	流完成，携带最终 AssistantMessage
StreamError	流错误，携带 DinoError

stream = client.stream(model, context)
async for event in stream:
    match event:
        case TextDelta(text=t):
            print(t, end="", flush=True)
        case ToolCallEnd(tool_call=tc):
            print(f"\n工具调用: {tc.name}({tc.arguments})")
        case StreamDone(message=msg):
            print(f"\n用量: {msg.usage}")

# 或直接等待最终结果
message = await stream.result()

@tool 装饰器

从函数签名自动生成 Tool 对象：

from dino_ai import tool
from typing import Annotated

@tool
def get_weather(
    city: Annotated[str, "城市名"],
    units: Annotated[str, "温度单位"] = "celsius",
) -> str:
    """获取指定城市的天气。"""
    return f"{city}: 25 {units}"

# 生成 Tool 对象用于 Context
t = get_weather.as_tool()
# Tool(name="get_weather", description="获取指定城市的天气。", parameters={...})

中间件

中间件在请求前后拦截，可组合使用：

from dino_ai import DinoClient, LoggingMiddleware, RetryMiddleware, CostGuardMiddleware

client = DinoClient(
    providers=[...],
    middleware=[
        LoggingMiddleware(),                         # 记录请求日志
        RetryMiddleware(max_retries=3),              # 可重试错误自动重试
        CostGuardMiddleware(max_cost_usd=1.0),       # 累计费用超限后拒绝请求
    ],
)

自定义中间件实现 Middleware 协议：

from dino_ai import Middleware, MiddlewareChain, EventStream, Model, Context, StreamOptions

class TimingMiddleware:
    def intercept(
        self,
        model: Model,
        context: Context,
        options: StreamOptions | None,
        chain: MiddlewareChain,
    ) -> EventStream:
        import time
        start = time.monotonic()
        stream = chain(model, context, options)
        from dino_ai.builtin_middleware import _wrap_stream
        return _wrap_stream(stream, on_done=lambda e: print(f"耗时: {time.monotonic() - start:.2f}s"))

结构化错误

所有厂商错误统一映射为 DinoError：

from dino_ai import ErrorCategory

stream = client.stream(model, context)
message = await stream.result()

if message.error:
    match message.error.category:
        case ErrorCategory.RATE_LIMITED:
            print(f"被限流，{message.error.retry_after_ms}ms 后重试")
        case ErrorCategory.CONTEXT_OVERFLOW:
            print("上下文太长，需要截断")
        case ErrorCategory.AUTH_FAILURE:
            print("API key 无效")
        case _:
            print(f"错误: {message.error.message}")

12 种错误类别：CONTEXT_OVERFLOW · RATE_LIMITED · AUTH_FAILURE · QUOTA_EXCEEDED · INVALID_REQUEST · MODEL_NOT_FOUND · CONTENT_FILTERED · NETWORK_ERROR · SERVER_ERROR · ABORTED · PROVIDER_ERROR · UNKNOWN

跨厂商上下文传递

使用 transform_messages() 在不同厂商之间转移对话历史：

from dino_ai import transform_messages

# OpenAI 模型生成的回复（可能含 thinking block）
message = await client.complete("gpt-4o", context)
context.messages.append(message)
context.messages.append(UserMessage(content="继续"))

# 无缝切换到 Claude 继续对话
# transform_messages 自动处理 thinking block 格式差异
message = await client.complete("claude-sonnet-4-0", context)

SimpleStream — 统一推理级别

不同厂商的 thinking/reasoning 参数各不相同。stream_simple() 提供统一的 ThinkingLevel 抽象：

from dino_ai import SimpleStreamOptions, ThinkingLevel

# 用统一的方式请求推理
options = SimpleStreamOptions(reasoning=ThinkingLevel.HIGH)

# 同一套代码，不同模型自动适配
await client.complete_simple("gpt-5.1-codex", context, options)     # OpenAI reasoning_effort
await client.complete_simple("claude-sonnet-4-0", context, options)    # Anthropic budget_tokens
await client.complete_simple("gemini-2.5-pro", context, options)       # Google thinking budget

支持的厂商

厂商	API 类型	Provider 类
OpenAI	openai-completions	OpenAICompletionsProvider
Anthropic	anthropic-messages	AnthropicProvider
Google Gemini	google-generative-ai	GoogleProvider
AWS Bedrock	bedrock-converse-stream	BedrockProvider
Azure OpenAI	azure-openai-responses	AzureOpenAIProvider
DeepSeek	openai-completions	OpenAICompletionsProvider
Groq	openai-completions	OpenAICompletionsProvider
xAI (Grok)	openai-completions	OpenAICompletionsProvider
Mistral	openai-completions	OpenAICompletionsProvider
Together	openai-completions	OpenAICompletionsProvider
OpenRouter	openai-completions	OpenAICompletionsProvider
Fireworks	anthropic-messages	AnthropicProvider
Cerebras	openai-completions	OpenAICompletionsProvider
HuggingFace	openai-completions	OpenAICompletionsProvider
Xiaomi/MiMo	openai-completions / anthropic-messages	双协议，自动提供两种 variant
阿里云 (DashScope)	openai-completions	OpenAICompletionsProvider
百川	openai-completions	OpenAICompletionsProvider
豆包	openai-completions	OpenAICompletionsProvider
Kimi	anthropic-messages	AnthropicProvider
阶跃星辰	openai-completions	OpenAICompletionsProvider
智谱	openai-completions	OpenAICompletionsProvider
MiniMax	anthropic-messages	AnthropicProvider
Moonshot	openai-completions	OpenAICompletionsProvider
SiliconFlow	openai-completions	OpenAICompletionsProvider

OpenAI 兼容的厂商共用 OpenAICompletionsProvider，Anthropic 兼容的厂商共用 AnthropicProvider，通过内置 profile 自动适配各家差异（thinking 格式、max_tokens 字段名、usage 上报等）。

环境变量

各厂商的 API key 通过环境变量配置，也可在 StreamOptions.api_key 中传入：

OPENAI_API_KEY=sk-...
ANTHROPIC_API_KEY=sk-ant-...
GOOGLE_API_KEY=AIza...
AWS_ACCESS_KEY_ID=AKIA...
AWS_SECRET_ACCESS_KEY=...
AWS_REGION=us-east-1
AZURE_OPENAI_API_KEY=...
DEEPSEEK_API_KEY=...
XAI_API_KEY=...
GROQ_API_KEY=...
MISTRAL_API_KEY=...
TOGETHER_API_KEY=...
OPENROUTER_API_KEY=...

开发

# 安装开发依赖
pip install -e ".[dev]"

# 运行测试
pytest

# 类型检查
mypy src/dino_ai

# 代码风格
ruff check src/ tests/

许可证

Apache-2.0