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e7eac27241
* standardizes ruff dep version across all `pyproject.toml` files * cli: ruff rules and corrections * langchain: rules and corrections
langchain-perplexity
This package contains the LangChain integration with Perplexity.
Installation
pip install -U langchain-perplexity
And you should configure your perplexity credentials
and then set the PPLX_API_KEY environment variable.
Usage
This package contains the ChatPerplexity class, which is the recommended way to interface with Perplexity chat models.
import getpass
import os
if not os.environ.get("PPLX_API_KEY"):
os.environ["PPLX_API_KEY"] = getpass.getpass("Enter API key for Perplexity: ")
from langchain.chat_models import init_chat_model
llm = init_chat_model("llama-3.1-sonar-small-128k-online", model_provider="perplexity")
llm.invoke("Hello, world!")