BAAI_bge-large-en-v1.5/recursive_chunks/_chat_templating.txt_chunk_12.txt

iteration, for example  using {% if loop.last %} to check if the current message is the last message in the 
conversation. Here's an example that puts these ideas together to add a generation prompt at the end of the
conversation if add_generation_prompt is True:
{%- if loop.last and add_generation_prompt %}
    {{- bos_token + 'Assistant:\n' }}
{%- endif %}
Compatibility with non-Python Jinja
There are multiple implementations of Jinja in various languages. They generally have the same syntax,
but a key difference is that when you're writing a template in Python you can use Python methods, such as
.lower() on strings or .items() on dicts. This will break if someone tries to use your template on a non-Python
implementation of Jinja. Non-Python implementations are particularly common in deployment environments, where JS
and Rust are very popular. 
Don't panic, though! There are a few easy changes you can make to your templates to ensure they're compatible across
all implementations of Jinja: