Pupli

pyinstaller -F --onedir Main.py
pyinstaller -F --onedir 1.py
pyinstaller -F --onedir 2.py

References
https://stackoverflow.com/questions/47610050/importing-python-modules-from-a-select-location

import psutil
pid = 12345
if psutil.pid_exists(pid):
    print("a process with pid %d exists" % pid)
else:
    print("a process with pid %d does not exist" % pid)

References
https://stackoverflow.com/questions/568271/how-to-check-if-there-exists-a-process-with-a-given-pid-in-python

import os
import signal

os.kill(pid, signal.SIGTERM) #or signal.SIGKILL

References
https://stackoverflow.com/questions/17856928/how-to-terminate-process-from-python-using-pid

A pipe can have only two endpoints. Hence, it is preferred over queue when only two-way communication is required.

import multiprocessing


def sender(conn: multiprocessing.connection.Connection, msgs: list):
    """
    function to send messages to other end of pipe
    """
    for msg in msgs:
        conn.send(msg)
        print("Sent the message: {}".format(msg))
    conn.close()


def receiver(conn: multiprocessing.connection.Connection):
    """
    function to print the messages received from other
    end of pipe
    """
    while 1:
        msg = conn.recv()
        if msg == "END":
            break
        print("Received the message: {}".format(msg))


if __name__ == "__main__":
    # messages to be sent
    msgs = ["hello", "hey", "hru?", "END"]

    # creating a pipe
    parent_conn, child_conn = multiprocessing.Pipe()

    # creating new processes
    p1 = multiprocessing.Process(target=sender, args=(parent_conn, msgs))
    p2 = multiprocessing.Process(target=receiver, args=(child_conn,))

    # running processes
    p1.start()
    p2.start()

    # wait until processes finish
    p1.join()
    p2.join()

References
https://www.geeksforgeeks.org/multiprocessing-python-set-2/