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sglang/examples/chat_template/tool_chat_template_deepseekv31.jinja

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{% if not add_generation_prompt is defined %}
{% set add_generation_prompt = false %}
{% endif %}
{% if not thinking is defined %}
{% set thinking = false %}
{% endif %}
{% set ns = namespace(is_first=false, is_tool=false, system_prompt='', is_first_sp=true, is_last_user=false) %}
{%- for message in messages %}
{%- if message['role'] == 'system' %}
{%- if ns.is_first_sp %}
{% set ns.system_prompt = ns.system_prompt + message['content'] %}
{% set ns.is_first_sp = false %}
{%- else %}
{% set ns.system_prompt = ns.system_prompt + '\n\n' + message['content'] %}
{%- endif %}
{%- endif %}
{%- endfor %}
{% if tools is defined and tools is not none %}
{% set tool_ns = namespace(text='## Tools\nYou have access to the following tools:\n') %}
{% for tool in tools %}
{% set tool_ns.text = tool_ns.text + '\n### ' + tool.function.name + '\nDescription: ' + tool.function.description + '\n\nParameters: ' + (tool.function.parameters | tojson) + '\n' %}
{% endfor %}
{% set tool_ns.text = tool_ns.text + "\nIMPORTANT: ALWAYS adhere to this exact format for tool use:\n<tool▁calls▁begin><tool▁call▁begin>tool_call_name<tool▁sep>tool_call_arguments<tool▁call▁end>{{additional_tool_calls}}<tool▁calls▁end>\n\nWhere:\n\n- `tool_call_name` must be an exact match to one of the available tools\n- `tool_call_arguments` must be valid JSON that strictly follows the tool's Parameters Schema\n- For multiple tool calls, chain them directly without separators or spaces\n" %}
{% set ns.system_prompt = ns.system_prompt + '\n\n' + tool_ns.text %}
{% endif %}
{{ bos_token }}{{ ns.system_prompt }}
{%- for message in messages %}
{%- if message['role'] == 'user' %}
{%- set ns.is_tool = false -%}
{%- set ns.is_first = false -%}
{%- set ns.is_last_user = true -%}
{{'<User>' + message['content']}}
{%- endif %}
{%- if message['role'] == 'assistant' and message['tool_calls'] is defined and message['tool_calls'] is not none %}
{%- if ns.is_last_user %}
{{'<Assistant></think>'}}
{%- endif %}
{%- set ns.is_last_user = false -%}
{%- set ns.is_first = false %}
{%- set ns.is_tool = false -%}
{%- for tool in message['tool_calls'] %}
{%- if not ns.is_first %}
{%- if message['content'] is none %}
{{'<tool▁calls▁begin><tool▁call▁begin>'+ tool['function']['name'] + '<tool▁sep>' + tool['function']['arguments'] + '<tool▁call▁end>'}}
{%- else %}
{{message['content'] + '<tool▁calls▁begin><tool▁call▁begin>' + tool['function']['name'] + '<tool▁sep>' + tool['function']['arguments'] + '<tool▁call▁end>'}}
{%- endif %}
{%- set ns.is_first = true -%}
{%- else %}
{{'<tool▁call▁begin>'+ tool['function']['name'] + '<tool▁sep>' + tool['function']['arguments'] + '<tool▁call▁end>'}}
{%- endif %}
{%- endfor %}
{{'<tool▁calls▁end><end▁of▁sentence>'}}
{%- endif %}
{%- if message['role'] == 'assistant' and (message['tool_calls'] is not defined or message['tool_calls'] is none) %}
{%- if ns.is_last_user %}
{{'<Assistant>'}}
{%- if message['prefix'] is defined and message['prefix'] and thinking %}
{{'<think>'}}
{%- else %}
{{'</think>'}}
{%- endif %}
{%- endif %}
{%- set ns.is_last_user = false -%}
{%- if ns.is_tool %}
{{message['content'] + '<end▁of▁sentence>'}}
{%- set ns.is_tool = false -%}
{%- else %}
{%- set content = message['content'] -%}
{%- if '</think>' in content %}
{%- set content = content.split('</think>', 1)[1] -%}
{%- endif %}
{{content + '<end▁of▁sentence>'}}
{%- endif %}
{%- endif %}
{%- if message['role'] == 'tool' %}
{%- set ns.is_last_user = false -%}
{%- set ns.is_tool = true -%}
{{'<tool▁output▁begin>' + message['content'] + '<tool▁output▁end>'}}
{%- endif %}
{%- endfor -%}
{%- if add_generation_prompt and ns.is_last_user and not ns.is_tool %}
{{'<Assistant>'}}
{%- if not thinking %}
{{'</think>'}}
{%- else %}
{{'<think>'}}
{%- endif %}
{% endif %}