Redirect output of a subprocess to a tkinter text box in real-time

tkoutput.py

"""Redirect output of a command to a tkinter text box in real-time"""

from __future__ import annotations

import subprocess
import threading
import tkinter as tk


def update_text_box(text_box: tk.Text, proc: subprocess.Popen):
    """Create a closure to capture proc and text_box which will be called to update the text box"""

    # closure to capture proc and text_box
    def _update_text_box():
        for line in proc.stdout:
            text_box.insert(tk.END, line.decode())
            text_box.yview(tk.END)

    return _update_text_box


def run_command(command: list[str], text_box: tk.Text):
    """Run a command and redirect output to a text box in real-time"""
    proc = subprocess.Popen(
        command,
        stdout=subprocess.PIPE,
        stderr=subprocess.STDOUT,
    )

    # Start a separate thread to update the text box with output
    thread = threading.Thread(target=update_text_box(text_box, proc))
    thread.start()


# Create the main Tkinter window
window = tk.Tk()

# Create a text box widget
text_box = tk.Text(window, height=40, width=80)
text_box.pack()


def on_command():
    """Callback for the button widget"""
    return run_command(["ls", "-l", ".."], text_box)


# Create a button widget
button = tk.Button(window, text="Run command", command=on_command)
button.pack()

# Start the Tkinter event loop
window.mainloop()

Should i currect identation for using your code snippet?

@Yangeok I'm sorry I don't understand the question. I think you are asking how to do attribution if you use this code? If so just put a note in the README with my name or GitHub ID. The code is under MIT License which means you can freely use it.