Simple live reload for terminal applications, refresh the terminal everytime that the file changes.

live_terminal.py

from watchdog.observers import Observer
from watchdog.events import FileSystemEventHandler
import sys
import os
import time
import subprocess as subp

FILENAME = sys.argv[1] 
PROC = None


def start_terminal(filename):
    return subp.Popen(
        [f'python {filename}'], stdout=subp.PIPE, shell=True, close_fds=False
    )


def restart_terminal(proc):
    kill_terminal(proc)
    return start_terminal(FILENAME)


def kill_terminal(proc):
    proc.kill()


class WatchHandler(FileSystemEventHandler):
    def on_modified(self, event):
        if event.src_path == os.path.abspath(FILENAME):
            restart_terminal(PROC)


PROC = start_terminal(FILENAME)

path = os.path.join(os.getcwd(), os.path.dirname(FILENAME))
event_handler = WatchHandler()
observer = Observer()
observer.schedule(event_handler, path, recursive=False)
observer.start()
try:
    while True:
        time.sleep(1)
except KeyboardInterrupt:
    observer.stop()
observer.join()

Need watchdog: that you can have with pip install watchdog

Usage:

python live_terminal.py path/to/file.py