Function format_qwen

llama_cpp/llama_chat_format.py:1098–1111

(
    messages: List[llama_types.ChatCompletionRequestMessage],
    **kwargs: Any,
)

@register_chat_format("qwen")
def format_qwen(
    messages: List[llama_types.ChatCompletionRequestMessage],
    **kwargs: Any,
) -> ChatFormatterResponse:
    _roles = dict(user="<|im_start|>user", assistant="<|im_start|>assistant")
    system_message = _get_system_message(messages) or "You are a helpful assistant."
    system_template = "<|im_start|>system\n{system_message}"
    system_message = system_template.format(system_message=system_message)
    _messages = _map_roles(messages, _roles)
    _messages.append((_roles["assistant"], None))
    _sep = "<|im_end|>"
    _prompt = _format_chatml(system_message, _messages, _sep)
    _sep2 = "<|endoftext|>"
    return ChatFormatterResponse(prompt=_prompt, stop=_sep2)


@register_chat_format("vicuna")