How to launch a subprocess in a new terminal?

Question

Hello I am a beginner & sorry for my bad English. My question is how to launch a sub process in a new terminal?

For the moment I have launched a process Loop.py in a new terminal with a subprocess function:

Lo = subprocess.Popen(['gnome-terminal', '-x', 'python3', '/address/Loop.py'])

but it’s not quit the same thing, I don't have access to the script Loop.py from the main script.

Thank you.

Update:

the main script is Main.py:

import subprocess, signal, os, time

Li = subprocess.Popen(['gnome-terminal'])
Lo = subprocess.Popen(['python3', '/address/Loop.py'])
time.sleep(0.1)
Qd = subprocess.Popen(['python3', '/adress/Qdial.py'])

if Qd.wait() != None:
    Lo.send_signal(signal.SIGINT)
    Li.send_signal(signal.SIGKILL)

The Qdial.pyis describe here: Qdial

The Loop.py is :

import time, signal

def handler(signum, frame):
    print('Exit!')
    exit()

signal.signal(signal.SIGINT, handler)

def loop():
    with open('/addres/Data.py', 'r') as file:
        lines = file.readlines()
        A1 = lines[0]
        A1 = float(A1[4:-1])
    print('A1 = ', A1)

while True:
    loop()
    time.sleep(.1)

and the Data.py is a bunch of data, here I use just one:

A1 = 10