How to call a CLI tool with os.system() by using ballback of a button

[Bo_Qiang]

Call os.system() with st.button on_click callback

I would like to call a CLI tool with os.system() by clicking a button. But my initial code does not work - it hangs.

Steps to reproduce

Code snippet:

import streamlit as st
import os

def call_cli():
    os.system("...")

st.button("call cli",on_click=call_cli)

[dataprofessor]

Hi @Bo_Qiang

You can run CLI via Popen from subprocess. Please see the repo:

dataprofessor/R-demo/blob/master/streamlit_app.py

And the video that shows how to implement this by running R in a Streamlit app:

How to run R and Python together in a Streamlit app

Hope this helps!

Best regards,
Chanin