vllm/examples/tool_chat_template_llama4_pythonic.jinja
Ye (Charlotte) Qi 16eda8c43a
[Frontend] Added chat templates for LLaMa4 pythonic tool calling (#16463)
Signed-off-by: Ye (Charlotte) Qi <yeq@meta.com>
Co-authored-by: Kai Wu <kaiwu@meta.com>
2025-04-12 06:26:17 +08:00

140 lines
6.0 KiB
Django/Jinja

{{- bos_token }}
{%- if custom_tools is defined %}
{%- set tools = custom_tools %}
{%- endif %}
{%- if not tools_in_user_message is defined %}
{%- set tools_in_user_message = false %}
{%- endif %}
{%- if not tools is defined %}
{%- set tools = none %}
{%- endif %}
{#- This block extracts the system message, so we can slot it into the right place. #}
{%- if messages[0]['role'] == 'system' %}
{%- if messages[0]['content'] is string %}
{%- set system_message = messages[0]['content']|trim %}
{%- else %}
{%- set system_message = messages[0]['content'][0]['text']|trim %}
{%- endif %}
{%- set messages = messages[1:] %}
{%- else %}
{%- if tools is not none %}
{#- Add default tool system message when tools are provided #}
{%- set system_message = "You are a helpful assistant with tool calling "
"capabilities. Only reply with a tool call if the function exists in the "
"library provided by the user. If it doesn't exist, just reply directly in "
"natural language. When you receive a tool call response, use the output to "
"format an answer to the original user question." %}
{%- else %}
{%- set system_message = "" %}
{%- endif %}
{%- endif %}
{#- System message if the user supplied one, or if tools are used (default tool system message) #}
{%- if system_message %}
{#- always use user provided system message to override default tool system message #}
{{- "<|header_start|>system<|header_end|>\n\n" }}
{{- system_message }}
{%- if tools is not none and not tools_in_user_message %}
{{- "Tools: You have access to the following tools. You might need to use one "
"or more function/tool calls to fulfill the task. \n"
"If none are needed, then proceed to the response.\n\n"
"Tool Call Syntax: You can call tools using the following syntax:\n"
"[func_name1(params_name1=params_value1, params_name2=params_value2, ...), ...]\n"
"Do not include anything else when calling the tools with the syntax above.\n\n"
"Here is a list of functions in JSON format that you can invoke.\n " }}
{%- for t in tools %}
{{- t | tojson(indent=4) }}
{{- "\n\n" }}
{%- endfor %}
{%- endif %}
{{- "<|eot|>" }}
{%- endif %}
{#- Custom tools are passed in a user message with some extra guidance #}
{%- if tools_in_user_message and tools is not none %}
{#- Extract the first user message so we can plug it in here #}
{%- if messages | length != 0 %}
{%- if messages[0]['content'] is string %}
{%- set first_user_message = messages[0]['content']|trim %}
{%- else %}
{%- set first_user_message = messages[0]['content'] | selectattr('type', 'equalto', 'text') | map(attribute='text') | map('trim') | join('\n') %}
{%- endif %}
{%- set messages = messages[1:] %}
{%- else %}
{{- raise_exception("Cannot put tools in the first user message when there's no first user message!") }}
{%- endif %}
{{- '<|header_start|>user<|header_end|>\n\n' -}}
{{- first_user_message}}
{{- "\nHere is a list of functions in JSON format that you can invoke:"}}
{%- for t in tools %}
{{- t | tojson(indent=4) }}
{{- "\n\n" }}
{%- endfor %}
{{- "Should you decide to return the function call(s), put them in the format "
"of [func_name1(params_name1=params_value1, params_name2=params_value2, "
"...), ...]\nDo not include anything else when calling the tools with the "
"syntax above." }}
{%- endif %}
{%- for message in messages %}
{%- if not (message.role == 'ipython' or message.role == 'tool' or 'tool_calls' in message) %}
{{- '<|header_start|>' + message['role'] + '<|header_end|>\n\n' }}
{%- if message['content'] is string %}
{{- message['content'] }}
{%- else %}
{%- for content in message['content'] %}
{%- if content['type'] == 'image' %}
{{- '<|image|>' }}
{%- elif content['type'] == 'text' %}
{{- content['text'] | trim }}
{%- endif %}
{%- endfor %}
{%- endif %}
{{- "<|eot|>" }}
{%- elif 'tool_calls' in message and message.tool_calls|length > 0 %}
{%- set tool_call = message.tool_calls[0].function %}
{{- '<|header_start|>assistant<|header_end|>\n\n' -}}
{%- if message['content'] is string %}
{{- message['content'] }}
{%- else %}
{%- for content in message['content'] %}
{%- if content['type'] == 'image' %}
{{- '<|image|>' }}
{%- elif content['type'] == 'text' %}
{{- content['text'] }}
{%- endif %}
{%- endfor %}
{%- endif %}
{%- for tool_call in message.tool_calls %}
{%- if tool_call.function is defined %}
{%- set tool_call = tool_call.function %}
{%- endif %}
{{- tool_call.name + '(' -}}
{%- for param in tool_call.arguments %}
{{- param + '=' -}}
{{- "%s" | format(tool_call.arguments[param]) -}}
{% if not loop.last %}, {% endif %}
{%- endfor %}
{{- ')' -}}
{% if not loop.last %}, {% endif %}
{%- endfor %}
{{- "<|eom|>" }}
{%- elif message.role == "tool" or message.role == "ipython" %}
{{- "<|header_start|>ipython<|header_end|>\n\n" }}
{%- if message.content is string %}
{{- message.content | tojson }}
{%- else %}
{%- for content in message['content'] %}
{%- if content['type'] == 'text' %}
{{- content['text'] | tojson }}
{%- endif %}
{%- endfor %}
{%- endif %}
{{- "<|eom|>" }}
{%- endif %}
{%- endfor %}
{%- if add_generation_prompt %}
{{- '<|header_start|>assistant<|header_end|>\n\n' }}
{%- endif %}