app.py

import json
import os
from pprint import pprint

import bitsandbytes as bnb
import pandas as pd
import torch
import torch.nn as nn
import transformers
from datasets import load_dataset
from huggingface_hub import notebook_login
from peft import (
    LoraConfig,
    PeftConfig,
    PeftModel,
    get_peft_model,
    prepare_model_for_kbit_training,
)
from transformers import (
    AutoConfig,
    AutoModelForCausalLM,
    AutoTokenizer,
    BitsAndBytesConfig,
)
import gradio as gr


bnb_config = BitsAndBytesConfig(
    load_in_4bit=True,
    bnb_4bit_use_double_quant=True,
    bnb_4bit_quant_type="nf4",
    bnb_4bit_compute_dtype=torch.bfloat16,
)

PEFT_MODEL = "cdy3870/Falcon-Fetch-Bot"

config = PeftConfig.from_pretrained(PEFT_MODEL)
model = AutoModelForCausalLM.from_pretrained(
    config.base_model_name_or_path,
    return_dict=True,
    quantization_config=bnb_config,
    device_map="auto",
    trust_remote_code=True
)
tokenizer = AutoTokenizer.from_pretrained(config.base_model_name_or_path)
tokenizer.pad_token = tokenizer.eos_token

model = PeftModel.from_pretrained(model, PEFT_MODEL)

generation_config = model.generation_config
generation_config.max_new_tokens = 200
generation_config.temperature = 0.7
generation_config.top_p = 0.7
generation_config.num_return_sequences = 1
generation_config.pad_token_id = tokenizer.eos_token_id
generation_config.eos_token_id = tokenizer.eos_token_id

pipeline = transformers.pipeline(
    "text-generation",
    model=model,
    tokenizer=tokenizer,
)

def query_model(message, history):

    prompt = f"""
    <human>: {message}
    <assistant>:
    """.strip()
    
    result = pipeline(
        prompt,
        generation_config=generation_config,
    )

    # parsed_result = result[0]["generated_text"].split("<assistant>:")[1][1:]

    return parsed_result

    
gr.ChatInterface(query_model, textbox=gr.Textbox(placeholder="Ask anything about Fetch!", container=False, scale=7),).launch()