app.py

# You can find this code for Chainlit python streaming here (https://docs.chainlit.io/concepts/streaming/python)

# OpenAI Chat completion
import os
from openai import AsyncOpenAI # importing openai for API usage
import chainlit as cl # importing chainlit for our app
from chainlit.prompt import Prompt, PromptMessage # importing prompt tools
from chainlit.playground.providers import ChatOpenAI # importing ChatOpenAI tools
from dotenv import load_dotenv

load_dotenv()

# ChatOpenAI Templates
system_template = """You are a helpful assistant who always speaks in a pleasant tone!
"""

user_template = """{input}
Think through your response step by step.
"""


@cl .on_chat_start # marks a function that will be executed at the start of a user session
async def start_chat():
settings = {
"model": "gpt-3.5-turbo",
"temperature": 0,
"max_tokens": 500,
"top_p": 1,
"frequency_penalty": 0,
"presence_penalty": 0,
}

cl.user_session.set("settings", settings)


@cl .on_message # marks a function that should be run each time the chatbot receives a message from a user
async def main(message: cl.Message):
settings = cl.user_session.get("settings")

client = AsyncOpenAI()

print(message.content)

prompt = Prompt(
provider=ChatOpenAI.id,
messages=[
PromptMessage(
role="system",
template=system_template,
formatted=system_template,
),
PromptMessage(
role="user",
template=user_template,
formatted=user_template.format(input=message.content),
),
],
inputs={"input": message.content},
settings=settings,
)

print([m.to_openai() for m in prompt.messages])

msg = cl.Message(content="")

# Call OpenAI
async for stream_resp in await client.chat.completions.create(
messages=[m.to_openai() for m in prompt.messages], stream=True, **settings
):
token = stream_resp.choices[0].delta.content
if not token:
token = ""
await msg.stream_token(token)

# Update the prompt object with the completion
prompt.completion = msg.content
msg.prompt = prompt

# Send and close the message stream
await msg.send()

app.py

@@ -1,3 +1,6 @@
+# You can find this code for Chainlit python streaming here (https://docs.chainlit.io/concepts/streaming/python)
+
+# OpenAI Chat completion
 import os
 from openai import AsyncOpenAI  # importing openai for API usage
 import chainlit as cl  # importing chainlit for our app