Update learning_platform.py

learning_platform.py

@@ -5,11 +5,11 @@ from datetime import datetime
 import json
 import logging
 from langchain.chat_models import ChatOpenAI
-from langchain.embeddings import OpenAIEmbeddings
-from langchain.vectorstores import FAISS
+from langchain_community.embeddings import OpenAIEmbeddings
+from langchain_community.vectorstores import FAISS
 from langchain.memory import ConversationBufferMemory
 from langchain.prompts import ChatPromptTemplate, MessagesPlaceholder
-from langchain.chains import createRetrievalChain, createStuffDocumentsChain, createHistoryAwareRetriever
+from langchain.chains import create_stuff_documents_chain, create_history_aware_retriever, create_retrieval_chain
 from prompts import CoursePromptTemplates
 from models import *
 from sqlalchemy.orm import Session
@@ -63,7 +63,7 @@ class EnhancedCourseBuilder:
             MessagesPlaceholder("chat_history"),
             ["human", "{input}"]
         ])
-        self.history_aware_retriever = createHistoryAwareRetriever(
+        self.history_aware_retriever = create_history_aware_retriever(
             llm=self.llm,
             retriever=self.vector_store.as_retriever(),
             rephrase_prompt=contextualize_q_prompt
@@ -82,15 +82,15 @@ class EnhancedCourseBuilder:
         ])
         
         # Create the question-answer chain
-        self.question_answer_chain = createStuffDocumentsChain(
+        self.question_answer_chain = create_stuff_documents_chain(
             llm=self.llm,
             prompt=qa_system_prompt
         )
         
         # Create the retrieval chain
-        self.rag_chain = createRetrievalChain(
+        self.rag_chain = create_retrieval_chain(
             retriever=self.history_aware_retriever,
-            combineDocsChain=self.question_answer_chain
+            combine_docs_chain=self.question_answer_chain
         )
 
     async def create_course(self, topic: str, difficulty: str, user_id: int) -> Course: