LlamaIndex prompts

xxrt

Hello, I'm using this import for prompt template
from llama_index.prompts.base import PromptTemplate
from llama_index.prompts.prompt_type import PromptType

Ang get below warnings:

UserWarning: Importing BasePromptTemplate from langchain root module is no longer supported.

UserWarning: Importing PromptTemplate from langchain root module is no longer supported.

Any updates on llamaindex impacting this ? BTW why langchain is mentioned ?

11 comments

WWhiteFang_Jr

I don't think there would be any impact.

langchain prompts were also there in llamaindex. And I think llamaindex is slowly removing dependency on langchain.

xxrt

and why are this warnings?

UserWarning: Importing BasePromptTemplate from langchain root module is no longer supported.

UserWarning: Importing PromptTemplate from langchain root module is no longer supported.

LLogan M

sounds like langchain updated their imports and is causing these warnings

LLogan M

If you update llama-index, we no longer use langchain for our prompt templates

xxrt

I updated to latest versions, I think this was the reason geting the warnings

langchain 0.0.303
llama-index 0.8.35

LLogan M

hmm it might be coming from the latest langchain version then

LLogan M

I will see if I can remove the imports to the prompts, it must be happening in our bridge file -- we are hoping to move enitrely off of any langchain dependency soon.

xxrt

yep https://github.com/jerryjliu/llama_index/blob/main/llama_index/prompts/base.py#L10C1-L10C6

LLogan M

yea looks like we needed it for this class
https://github.com/jerryjliu/llama_index/blob/6672a86f5e923f20ca7e763d5f0b259ae82f03f4/llama_index/prompts/base.py#L254

🤦‍♂️

xxrt

I'm using now:

Plain Text

from llama_index.prompts.base import PromptTemplate
from llama_index.prompts.prompt_type import PromptType


CUST_QA_PROMPT = PromptTemplate(CUST_PROMPT_TEMPLATE, prompt_type=PromptType.QUESTION_ANSWER)
CUST_REFINE_PROMPT = PromptTemplate(CUST_REFINE_PROMPT_TEMPLATE, prompt_type=PromptType.REFINE)

I should fallow new format from here https://gpt-index.readthedocs.io/en/stable/core_modules/model_modules/prompts.html#usage-pattern ?

Plain Text

from llama_index.prompts import PromptTemplate

template = (
    "We have provided context information below. \n"
    "---------------------\n"
    "{context_str}"
    "\n---------------------\n"
    "Given this information, please answer the question: {query_str}\n"
)
qa_template = PromptTemplate(template)

# you can create text prompt (for completion API) 
prompt = qa_template.format(context_str=..., query_str=...)

# or easily convert to message prompts (for chat API)
messages = qa_template.format_messages(context_str=..., query_str=...)

LLogan M

I think you probably would be more interested in this example
https://gpt-index.readthedocs.io/en/stable/examples/customization/prompts/chat_prompts.html

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