mirror of
https://github.com/hwchase17/langchain
synced 2024-11-08 07:10:35 +00:00
34 lines
811 B
Python
34 lines
811 B
Python
from langchain import hub
|
|
from langchain.chat_models import ChatAnthropic
|
|
from langchain.pydantic_v1 import BaseModel
|
|
from langchain.schema import StrOutputParser
|
|
from langchain.schema.runnable import RunnableLambda, RunnablePassthrough
|
|
from langchain.utilities import WikipediaAPIWrapper
|
|
|
|
|
|
class Question(BaseModel):
|
|
__root__: str
|
|
|
|
|
|
wiki = WikipediaAPIWrapper(top_k_results=5)
|
|
prompt = hub.pull("bagatur/chain-of-note-wiki")
|
|
|
|
llm = ChatAnthropic(model="claude-2")
|
|
|
|
|
|
def format_docs(docs):
|
|
return "\n\n".join(
|
|
f"Wikipedia {i+1}:\n{doc.page_content}" for i, doc in enumerate(docs)
|
|
)
|
|
|
|
|
|
chain = (
|
|
{
|
|
"passages": RunnableLambda(wiki.load) | format_docs,
|
|
"question": RunnablePassthrough(),
|
|
}
|
|
| prompt
|
|
| llm
|
|
| StrOutputParser()
|
|
).with_types(input_type=Question)
|