> ## Documentation Index
> Fetch the complete documentation index at: https://ikun.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Weaviate

## 代码

```python cookbook/agent_concepts/knowledge/vector_dbs/weaviate_db/weaviate_db_hybrid_search.py theme={null}
import typer
from agno.agent import Agent
from agno.knowledge.pdf_url import PDFUrlKnowledgeBase
from agno.vectordb.search import SearchType
from agno.vectordb.weaviate import Distance, VectorIndex, Weaviate
from rich.prompt import Prompt

vector_db = Weaviate(
    collection="recipes",
    search_type=SearchType.hybrid,
    vector_index=VectorIndex.HNSW,
    distance=Distance.COSINE,
    local=False,  # 如果使用 Weaviate Cloud，设置为 True，如果使用本地实例，设置为 False
    hybrid_search_alpha=0.6, # 调整用于混合搜索的 alpha 值（0.0-1.0，默认为 0.5），其中 0 是纯关键词搜索，1 是纯向量搜索
)

knowledge_base = PDFUrlKnowledgeBase(
    urls=["https://agno-public.s3.amazonaws.com/recipes/ThaiRecipes.pdf"],
    vector_db=vector_db,
)

def weaviate_agent(user: str = "user"):
    agent = Agent(
        user_id=user,
        knowledge=knowledge_base,
        search_knowledge=True,
    )

    while True:
        message = Prompt.ask(f"[bold] :sunglasses: {user} [/bold]")
        if message in ("exit", "bye"):
            break
        agent.print_response(message)


if __name__ == "__main__":
    # 首次运行后注释掉此行
    knowledge_base.load(recreate=True)

    typer.run(weaviate_agent)
```

## 用法

<Steps>
  <Snippet file="create-venv-step.mdx" />

  <Step title="设置您的 API 密钥">
    ```bash theme={null}
    export OPENAI_API_KEY=xxx
    ```
  </Step>

  <Step title="安装库">
    ```bash theme={null}
    pip install -U weaviate-client tantivy pypdf openai agno
    ```
  </Step>

  <Step title="运行 Agent">
    <CodeGroup>
      ```bash Mac theme={null}
      python cookbook/agent_concepts/knowledge/vector_dbs/weaviate_db/weaviate_db_hybrid_search.py
      ```

      ```bash Windows theme={null}
      python cookbook/agent_concepts/knowledge/vector_dbs/weaviate_db/weaviate_db_hybrid_search.py
      ```
    </CodeGroup>
  </Step>
</Steps>