fix faiss_index error

app.py

@@ -22,6 +22,7 @@ from sentence_transformers import SentenceTransformer
 import torch
 from langchain_community.llms.ollama import Ollama
 from langchain.prompts import ChatPromptTemplate
+from langchain_community.vectorstores import FAISS
 
 device = 'cuda' if torch.cuda.is_available() else 'cpu'
 
@@ -143,10 +144,10 @@ def get_faiss_semantic_index():
 
     # Load embeddings from the pickle file
     with open(file_path, "rb") as f:
-        index = pickle.load(f)
+        faiss_index = pickle.load(f)
 
     print("Embeddings loaded successfully.")
-    return index
+    return faiss_index
 
 # def promt_engineer(text):
 PROMPT_TEMPLATE = """
@@ -184,7 +185,7 @@ Answer the question based on the above context: {question}
 
 def chat_actions():
     
-    index = get_faiss_semantic_index()
+    faiss_index = get_faiss_semantic_index()
 
     st.session_state["chat_history"].append(
         {"role": "user", "content": st.session_state["chat_input"]},
@@ -192,7 +193,7 @@ def chat_actions():
 
     # query_embedding = model.encode(st.session_state["chat_input"])
     query = st.session_state["chat_input"]
-    docs = index.similarity_search(query, k=2)
+    docs = faiss_index.similarity_search(query, k=2)
     for doc in docs:
         print("\n")
         print(str(doc.metadata["page"]+1) + ":", doc.page_content)

requirements.txt

@@ -12,5 +12,4 @@ openai
 PyMuPDF  # instead of fitz
 nltk
 langchain_community
-langchain
-faiss
+langchain