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from transformers import AutoTokenizer, AutoModelForCausalLM, pipeline
import gradio as gr
import torch
model_id = "tiiuae/falcon-rw-1b" # small enough to run in Hugging Face Space
tokenizer = AutoTokenizer.from_pretrained(model_id)
model = AutoModelForCausalLM.from_pretrained(model_id)
pipe = pipeline("text-generation", model=model, tokenizer=tokenizer, device=0 if torch.cuda.is_available() else -1)
def chat(user_input, history):
prompt = ""
for user, bot in history:
prompt += f"User: {user}\nBot: {bot}\n"
prompt += f"User: {user_input}\nBot:"
response = pipe(prompt, max_new_tokens=128, do_sample=True, temperature=0.7)[0]["generated_text"]
reply = response.split("Bot:")[-1].strip()
history.append((user_input, reply))
return history, history
gr.ChatInterface(chat, chatbot=gr.Chatbot(), title="Lightweight Chatbot").launch()
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