chat_template.jinja

{{- bos_token -}}
{%- set has_system = messages and messages[0]['role'] == 'system' -%}
{%- if has_system -%}
  {{- '<|start_header_id|>system<|end_header_id|>\n\n' + (messages[0]['content']|default('')) + '<|eot_id|>' -}}
  {%- set loop_messages = messages[1:] -%}
{%- else -%}
  {%- set loop_messages = messages -%}
{%- endif -%}
{%- for m in loop_messages -%}
  {%- set role = m['role']|default('') -%}
  {%- set content = m['content']|default('', true) -%}
  {%- if content is string -%}
    {%- set text = content -%}
  {%- else -%}
    {%- set text = (content | map(attribute='text') | join('')) -%}
  {%- endif -%}
  {%- if text|trim|length > 0 -%}
    {%- if role == 'user' -%}
      {{- '<|start_header_id|>user<|end_header_id|>\n\n' + text + '<|eot_id|>' -}}
    {%- elif role == 'assistant' -%}
      {{- '<|start_header_id|>assistant<|end_header_id|>\n\n' + text + '<|eot_id|>' -}}
    {%- elif role == 'system' -%}
      {{- '<|start_header_id|>system<|end_header_id|>\n\n' + text + '<|eot_id|>' -}}
    {%- endif -%}
  {%- endif -%}
{%- endfor -%}
{%- if add_generation_prompt and (loop_messages|length == 0 or (loop_messages|last)['role'] != 'assistant') -%}
  {{- '<|start_header_id|>assistant<|end_header_id|>\n\n' -}}
{%- else -%}
  {{- eos_token -}}
{%- endif -%}