Chat Messages

Обновлено 24 мая 2024

One of the core utility classes underpinning most (if not all) memory modules is the ChatMessageHistory class. This is a super lightweight wrapper that provides convenience methods for saving HumanMessages, AIMessages, and then fetching them all.

You may want to use this class directly if you are managing memory outside of a chain.

from langchain.memory import ChatMessageHistory

history = ChatMessageHistory()

history.add_user_message("hi!")

history.add_ai_message("whats up?")

history.messages

    [HumanMessage(content='hi!', additional_kwargs={}),
     AIMessage(content='whats up?', additional_kwargs={})]