Update app.py

app.py

@@ -22,17 +22,20 @@ hf = HuggingFaceHub(
 
 from langchain.memory import ConversationBufferWindowMemory
 
-memory = ConversationBufferWindowMemory(k=2)
-history =[]
+
 
 template = """
 You are Abi, a useful AI assistant and answer for user questions.
-
+{chat_history}
 Question: {question}
 Answer:
 """
 # prompt = PromptTemplate.from_template(template)
-promt = PromptTemplate(template = template, input_variables=['question'])
+promt = PromptTemplate(template = template, input_variables=['chat_history','question'])
+
+memory = ConversationBufferMemory(memory_key="chat_history")
+history =[]
+
 llm_chain = LLMChain(llm=hf, prompt=promt, memory= memory,verbose = False)
 
 def ask_bot(query,hist = history):