app.py

from transformers import pipeline, Conversation
import gradio as gr
chatbot = pipeline(model="facebook/blenderbot-400M-distill")
message_list = []
response_list = []
def vanilla_chatbot(message, history):
  conversation = Conversation(text=message, past_user_inputs=message_list,generated_responses=response_list)
  bot = chatbot(conversation.messages[0]['content']) # working code
  return bot[-1]['generated_text']
demo_chatbot = gr.ChatInterface(vanilla_chatbot, title="Mashdemy Chatbot", 
                                description="Enter text to startchatting.")
demo_chatbot.launch(share = True)