Update QnA.py

QnA.py

@@ -2,6 +2,9 @@ from langchain.chains import RetrievalQA
 #from Api_Key import google_plam
 from langchain.llms import GooglePalm
 
+import os
+os.environ["GOOGLE_API_KEY"]
+
 def Q_A(vectorstore,question):
     google_llm = GooglePalm(google_api_key=google_plam, temperature=0.5)
     qa = RetrievalQA.from_chain_type(llm=google_llm, chain_type="stuff", retriever=vectorstore.as_retriever())