使用官方提供的腳本創(chuàng)建ChatGLM3的DEMO：

cd basic_demo
python web_demo_gradio.py

?出現效果異常問題：

====conversation====
?[{'role': 'user', 'content': '你好'}, {'role': 'assistant', 'content': '你好，有什么我可以幫助你的嗎？\n\n<|im_end|>'}, {'role': 'user', 'content': '你好'}]

No chat template is defined for this tokenizer - using a default chat template that implements the ChatML format (without BOS/EOS tokens!). If the default is not appropriate for your model, please set `tokenizer.chat_template` to an appropriate template. See https://huggingface.co/docs/transformers/main/chat_templating for more information.

原因分析：

• 模型版本與代碼不匹配，tokenizer_config.json配置文件中缺少prompt模板
• 官方代碼存在問題，尚不支持本地模型使用apply_chat_template方法

解決方案：修改tokenizer方式，不要使用apply_chat_template方法，單輪對話可以改用build_chat_input方法

def predict(history, max_length, top_p, temperature):
    stop = StopOnTokens()
    messages = []
    for idx, (user_msg, model_msg) in enumerate(history):
        if idx == len(history) - 1 and not model_msg:
            messages.append({"role": "user", "content": user_msg})
            break
        if user_msg:
            messages.append({"role": "user", "content": user_msg})
        if model_msg:
            messages.append({"role": "assistant", "content": model_msg})

    print("\n\n====conversation====\n", messages)
    model_inputs = tokenizer.apply_chat_template(messages,
                                                 add_generation_prompt=True,
                                                 tokenize=True,
                                                 return_tensors="pt").to(next(model.parameters()).device)
    print('debug: old: model_inputs: {}'.format(model_inputs))
    model_inputs = tokenizer.build_chat_input(messages[-1]['content'], history=None, role="user").input_ids.to(model.device)
    print('debug: new: model_inputs: {}'.format(model_inputs))
    streamer = TextIteratorStreamer(tokenizer, timeout=60, skip_prompt=True, skip_special_tokens=True)
    generate_kwargs = {
        "input_ids": model_inputs,
        "streamer": streamer,
        "max_new_tokens": max_length,
        "do_sample": True,
        "top_p": top_p,
        "temperature": temperature,
        "stopping_criteria": StoppingCriteriaList([stop]),
        "repetition_penalty": 1.2,
    }
    t = Thread(target=model.generate, kwargs=generate_kwargs)
    t.start()

    for new_token in streamer:
        if new_token != '':
            history[-1][1] += new_token
            yield history

tokenizer.chat_template介紹

Next time you use?apply_chat_template(), it will use your new template! This attribute will be saved in the?tokenizer_config.json?file, so you can use?push_to_hub()?to upload your new template to the Hub and make sure everyone’s using the right template for your model!

設置tokenizer.chat_template屬性后，下次使用apply_chat_template()時，將使用您的新模板！此屬性保存在tokenizer_config.json文件中，因此您可以用push_to_hub()將新模板上傳到Hub，確保大家都能使用正確的模板！

If a model does not have a chat template set, but there is a default template for its model class, the?ConversationalPipeline?class and methods like?apply_chat_template?will use the class template instead. You can find out what the default template for your tokenizer is by checking the?tokenizer.default_chat_template?attribute.

如果模型沒有設置聊天模板，但有其模型類的默認模板，則ConversationalPipeline類和apply_chat_template等方法將使用類模板代替。你可以通過檢查tokenizer.default_chat_template屬性來了解你的tokenizer的默認模板是什么。?文章來源地址http://www.zghlxwxcb.cn/news/detail-819345.html

def predict(history, max_length, top_p, temperature):
    stop = StopOnTokens()
    messages = []
    for idx, (user_msg, model_msg) in enumerate(history):
        if idx == len(history) - 1 and not model_msg:
            messages.append({"role": "user", "content": user_msg})
            break
        if user_msg:
            messages.append({"role": "user", "content": user_msg})
        if model_msg:
            messages.append({"role": "assistant", "content": model_msg})

    print("\n\n====conversation====\n", messages)
    print('debug: tokenizer.chat_template:\n{}'.format(tokenizer.chat_template))
    print('debug: tokenizer.default_chat_template:\n{}'.format(tokenizer.default_chat_template))
    model_inputs = tokenizer.apply_chat_template(messages,
                                                 add_generation_prompt=True,
                                                 tokenize=True,
                                                 return_tensors="pt").to(next(model.parameters()).device)
    streamer = TextIteratorStreamer(tokenizer, timeout=600, skip_prompt=True, skip_special_tokens=True)
    generate_kwargs = {
        "input_ids": model_inputs,
        "streamer": streamer,
        "max_new_tokens": max_length,
        "do_sample": True,
        "top_p": top_p,
        "temperature": temperature,
        "stopping_criteria": StoppingCriteriaList([stop]),
        "repetition_penalty": 1.2,
    }
    t = Thread(target=model.generate, kwargs=generate_kwargs)
    t.start()

    for new_token in streamer:
        if new_token != '':
            history[-1][1] += new_token
            yield history

到了這里，關于ChatGLM3報錯：No chat template is defined for this tokenizer的文章就介紹完了。如果您還想了解更多內容，請在右上角搜索TOY模板網以前的文章或繼續(xù)瀏覽下面的相關文章，希望大家以后多多支持TOY模板網！