Source code for langchain_community.chat_models.meta
from typing import List
from langchain_core.messages import (
AIMessage,
BaseMessage,
ChatMessage,
HumanMessage,
SystemMessage,
)
def _convert_one_message_to_text_llama(message: BaseMessage) -> str:
if isinstance(message, ChatMessage):
message_text = f"\n\n{message.role.capitalize()}: {message.content}"
elif isinstance(message, HumanMessage):
message_text = f"[INST] {message.content} [/INST]"
elif isinstance(message, AIMessage):
message_text = f"{message.content}"
elif isinstance(message, SystemMessage):
message_text = f"<<SYS>> {message.content} <</SYS>>"
else:
raise ValueError(f"Got unknown type {message}")
return message_text
[docs]def convert_messages_to_prompt_llama(messages: List[BaseMessage]) -> str:
"""Convert a list of messages to a prompt for llama."""
return "\n".join(
[_convert_one_message_to_text_llama(message) for message in messages]
)