Create a Simple ChatBot with Mesop + Ollama less than 25 lines

0xkoji - Jul 6 - - Dev Community

In this post, I will show you how to create a simple chatbot with Mesop and Ollama.

What is Mesop?

https://google.github.io/mesop/
Quickly build web UIs in Python
Used at Google for rapid internal app development

Mesop is like Gradio or Streamlit.

Step0 Install Ollama

You can download Ollama from the following link.
https://ollama.com/download

Step1 Install dependencies

pip install mesop ollama
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Step2 Write a chatbot

app.py

import ollama
import mesop as me
import mesop.labs as mel

@me.page(
    path="/",
    title="Mesop ChatBot",
)
def page():
    mel.chat(transform, title="Ollama ChatBot with Mesop", bot_user="Mesop Bot")

def transform(input: str, history: list[mel.ChatMessage]):
    messages = [{"role": "user", "content": message.content} for message in history]
    messages.append({"role": "user", "content": input})

    stream = ollama.chat(model='llama3', messages=messages, stream=True)

    for chunk in stream:
        content = chunk.get('message', {}).get('content', '')
        if content:
            yield content
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Step3 Run Chatbot

mesop app.py
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chatbot

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