app.py

#!/usr/bin/env python
# -*- coding: utf-8 -*-

import gradio as gr
#from transformers import pipeline 
import torch
from utils import *
from presets import *

#antwort=""

# Create a chatbot connection
#chatbot = hugchat.ChatBot(cookie_path="cookies.json")

#Alternativ mit beliebigen Modellen:
#base_model = "project-baize/baize-v2-7b"
base_model = "microsoft/DialoGPT-medium"
tokenizer,model,device = load_tokenizer_and_model(base_model)



def predict(text,
            chatbotGr,
            history,
            top_p,
            temperature,
            max_length_tokens,
            max_context_length_tokens,):
    if text=="":
        yield chatbotGr,history,"Empty context."
        return 
    try:
        model
    except:
        yield [[text,"No Model Found"]],[],"No Model Found"
        return

    inputs = generate_prompt_with_history(text,history,tokenizer,max_length=max_context_length_tokens)
    if inputs is None:
        yield chatbotGr,history,"Input too long."
        return 
    else:
        prompt,inputs=inputs
        begin_length = len(prompt)
    input_ids = inputs["input_ids"][:,-max_context_length_tokens:].to(device)
    torch.cuda.empty_cache()

    with torch.no_grad():
        for x in greedy_search(input_ids,model,tokenizer,stop_words=["[|Human|]", "[|AI|]"],max_length=max_length_tokens,temperature=temperature,top_p=top_p):
            if is_stop_word_or_prefix(x,["[|Human|]", "[|AI|]"]) is False:
                if "[|Human|]" in x:
                    x = x[:x.index("[|Human|]")].strip()
                if "[|AI|]" in x:
                    x = x[:x.index("[|AI|]")].strip() 
                x = x.strip()   
                a, b=   [[y[0],convert_to_markdown(y[1])] for y in history]+[[text, convert_to_markdown(x)]],history + [[text,x]]
                yield a, b, "Generating..."
            if shared_state.interrupted:
                shared_state.recover()
                try:
                    yield a, b, "Stop: Success"
                    return
                except:
                    pass
    del input_ids
    gc.collect()
    torch.cuda.empty_cache()
    #print(text)
    #print(x)
    #print("="*80)
    try:
        yield a,b,"Generate: Success"
    except:
        pass


def reset_chat():
    id_new = chatbot.new_conversation()
    chatbot.change_conversation(id_new)
    reset_textbox()



with gr.Blocks(theme=small_and_beautiful_theme) as demo:
    history = gr.State([])
    user_question = gr.State("")
    with gr.Row():
        gr.HTML(title)
        status_display = gr.Markdown("Erfolg", elem_id="status_display")
    gr.Markdown(description_top)
    with gr.Row(scale=1).style(equal_height=True):
        with gr.Column(scale=5):
            with gr.Row(scale=1):
                chatbotGr = gr.Chatbot(elem_id="LI_chatbot").style(height="100%")
            with gr.Row(scale=1):
                with gr.Column(scale=12):
                    user_input = gr.Textbox(
                        show_label=False, placeholder="Gib deinen Text / Frage ein."
                    ).style(container=False)
                with gr.Column(min_width=90, scale=1):
                    submitBtn = gr.Button("Absenden")
                with gr.Column(min_width=90, scale=1):
                    cancelBtn = gr.Button("Stoppen")
            with gr.Row(scale=1):
                emptyBtn = gr.Button(
                    "🧹 Neuer Chat",
                )
        with gr.Column():
            with gr.Column(min_width=50, scale=1):
                with gr.Tab(label="Parameter zum Model"):
                    gr.Markdown("# Parameters")
                    top_p = gr.Slider(
                        minimum=-0,
                        maximum=1.0,
                        value=0.95,
                        step=0.05,
                        interactive=True,
                        label="Top-p",
                    )
                    temperature = gr.Slider(
                        minimum=0.1,
                        maximum=2.0,
                        value=1,
                        step=0.1,
                        interactive=True,
                        label="Temperature",
                    )
                    max_length_tokens = gr.Slider(
                        minimum=0,
                        maximum=512,
                        value=512,
                        step=8,
                        interactive=True,
                        label="Max Generation Tokens",
                    )
                    max_context_length_tokens = gr.Slider(
                        minimum=0,
                        maximum=4096,
                        value=2048,
                        step=128,
                        interactive=True,
                        label="Max History Tokens",
                    )
    gr.Markdown(description)

    predict_args = dict(
        fn=predict,
        inputs=[
            user_question,
            chatbotGr,
            history,
            top_p,
            temperature,
            max_length_tokens,
            max_context_length_tokens,
        ],
        outputs=[chatbotGr, history, status_display],
        show_progress=True,
    )

    #neuer Chat
    reset_args = dict(
        fn=reset_chat, inputs=[], outputs=[user_input, status_display]
    )
    
    # Chatbot
    transfer_input_args = dict(
        fn=transfer_input, inputs=[user_input], outputs=[user_question, user_input, submitBtn], show_progress=True
    )

    #Listener auf Start-Click auf Button oder Return
    predict_event1 = user_input.submit(**transfer_input_args).then(**predict_args)
    predict_event2 = submitBtn.click(**transfer_input_args).then(**predict_args)

    #Listener, Wenn reset...
    emptyBtn.click(
        reset_state,
        outputs=[chatbotGr, history, status_display],
        show_progress=True,
    )
    emptyBtn.click(**reset_args)

demo.title = "LI Chat"
#demo.queue(concurrency_count=1).launch(share=True) 
demo.queue(concurrency_count=1).launch()