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from transformers import AutoModel, AutoTokenizer
import gradio as gr

tokenizer = AutoTokenizer.from_pretrained("THUDM/chatglm-6b", trust_remote_code=True)
model = AutoModel.from_pretrained("THUDM/chatglm-6b", trust_remote_code=True).half().cuda()
model = model.eval()

def predict(input, history=None):
    if history is None:
        history = []
    response, history = model.chat(tokenizer, input, history)
    return history, history


with gr.Blocks() as demo:
    gr.Markdown('''## ChatGLM-6B - unofficial demo
    Unnoficial demo of the [ChatGLM-6B](https://github.com/THUDM/ChatGLM-6B/blob/main/README_en.md) model, trained on 1T tokens of English and Chinese
    ''')
    state = gr.State([])
    chatbot = gr.Chatbot([], elem_id="chatbot").style(height=500)
    with gr.Row():
        with gr.Column(scale=4):
            txt = gr.Textbox(show_label=False, placeholder="Enter text and press enter").style(container=False)
        with gr.Column(scale=1):
            button = gr.Button("Generate")
    txt.submit(predict, [txt, state], [chatbot, state])
    button.click(predict, [txt, state], [chatbot, state])
demo.queue().launch()