app.py

from transformers import GPTNeoForCausalLM, GPT2Tokenizer
import gradio as gr

model = GPTNeoForCausalLM.from_pretrained("EleutherAI/gpt-neo-125M")
tokenizer = GPT2Tokenizer.from_pretrained("EleutherAI/gpt-neo-125M")

prompt = """This is a discussion between a person and a diesel locomotive. 
person: Are you a diesel locomotive?
Diesel locomotive: Yes!!
person: Where are you?
Diesel locomotive: I live in a railway station!!
person: Who are you? 
Diesel locomotive: I'm a machine!!
person: """

def my_split(s, seps):
    res = [s]
    for sep in seps:
        s, res = res, []
        for seq in s:
            res += seq.split(sep)
    return res

# input = "Who are you?"
def chat_base(input):
  p = prompt + input
  input_ids = tokenizer(p, return_tensors="pt").input_ids
  gen_tokens = model.generate(input_ids, do_sample=True, temperature=0.7, max_length=150,)
  gen_text = tokenizer.batch_decode(gen_tokens)[0]
  # print(gen_text)
  result = gen_text[len(p):]   
  # print(">", result)
  result = my_split(result, [']', '\n'])[1]
  # print(">>", result)
  if "Hassan: " in result:
   result = result.split("Diesel locomotive: ")[-1]
# print(">>>", result)
  return result
  
import gradio as gr

def chat(message):
    history = gr.get_state() or []
    print(history)
    response = chat_base(message)
    history.append((message, response))
    gr.set_state(history)
    html = "<div class='chatbot'>"
    for user_msg, resp_msg in history:
        html += f"<div class='user_msg'>{user_msg}</div>"
        html += f"<div class='resp_msg'>{resp_msg}</div>"
    html += "</div>"
    return response

iface = gr.Interface(chat_base, gr.inputs.Textbox(label="Ask a Question"), "text", allow_screenshot=False, allow_flagging=False)
iface.launch()