Message Classes In Langchain

from langchain_openai import ChatOpenAI
from langchain_core.messages import HumanMessage, SystemMessage, AIMessage

# Create model
llm = ChatOpenAI(
    model="gpt-4o-mini",
    temperature=0
)

# Conversation messages
messages = [
    SystemMessage(content="You are a helpful coding assistant."),
    HumanMessage(content="What is Python?"),
    AIMessage(content="Python is a programming language."),
    HumanMessage(content="Who created it?")
]

# Send conversation to model
response = llm.invoke(messages)

print(response.content)

SystemMessage(content="You are a helpful coding assistant.")

HumanMessage(content="What is Python?")

 AIMessage(content="Python is a programming language.")

HumanMessage(content="Who created it?")

Query/Feedback