Update app.py

app.py

@@ -3,12 +3,8 @@ import requests
 import datetime
 
 from langchain.llms import HuggingFaceHub
-from langchain.callbacks.manager import CallbackManager
-from langchain.callbacks.streaming_stdout import StreamingStdOutCallbackHandler
 
 from langchain.chains import RetrievalQA
-from langchain.schema import LLMResult
-from langchain.callbacks.base import BaseCallbackHandler
 
 # Embed and store
 from langchain.vectorstores import Chroma
@@ -17,7 +13,7 @@ from langchain.memory import ConversationBufferMemory
 from langchain.prompts import PromptTemplate
 
 from langchain.text_splitter import RecursiveCharacterTextSplitter
-from langchain.document_loaders import WebBaseLoader, RecursiveUrlLoader
+from langchain.document_loaders import RecursiveUrlLoader
 from langchain.chains import RetrievalQA
 
 embedding = HuggingFaceHubEmbeddings()
@@ -38,7 +34,7 @@ docs = text_splitter.split_documents(docs)
 
 
 # text_splitter=RecursiveCharacterTextSplitter(chunk_size=500, chunk_overlap=0)
-# all_splits = text_splitter.split_documents(data) 
+# all_splits = text_splitter.split_documents(data)
 
 vectorstore = Chroma.from_documents(documents=docs, embedding=embedding)