We Keep Coding

How to run a bash file that does not exited when my program ends python

I have a python program which is instantier as a linux service.
This service updates itself by downloading a new version of the code on an ftp server and launches a bash file to update the service.
In this file I have a line that destroys the current service before recreating it with the new source code.
I run this bash script with:
subprocess.call("sudo bash /home/pi/install.sh",shell=True)
I understand that this "subprocess" lives in my python program. And the bash script stop the linux service so stop the python program so stop itself ... And so it never ends.
What are the solutions to solve my problem?

I think there's several ways to do it - one of them being (maybe not the most elegant?) to make your python schedule a cron-job of the bash-script using python-crontab.
Say it's 13:00 and you want your job to run - then make the python script schedule a cron-job to 13:05 (just to add a time buffer).
You can then remove your cron-job after the bash-job has been run, either manually or implement it in your bash-script (or make it call a python script which uses python-crontab to remove it, it's fairly easy to do so)

Don't let the script stop the service. Just let it exit with a specific exit code if it installed a new version, and restart the service accordingly in the Python code.

Refreshing PI Bluetooth Connection via Python

The Raspberry PI seems to be dropping the connection to (some?) paired devices after 5-15 minutes of running a python script.
The Connection can be recreated with this shell command:
bluetoothctl
But to enter this command, the script would have to be killed and restarted afterwards.

Attention: After testing this approach for a while I found out it didn't fix the problem in general
NOT WORKING:
Although I didn't test running my program for several hours, this seems to do the trick.
from threading import Thread
from time import sleep
import subprocess
def bluetooth_stay_awake():
"""Ping the bluetooth compontent to keep all connections up"""
thread= Thread(target=(lambda:subprocess.run(["watch", "bluetoothctl"])))
thread.start()
Using the shell command watch bluetoothctl is important here, otherwise the bluetoothctl process would block you python script.
Shell Commands & Threading in Python

Python os.system enter commands to execute in CLI application

I am currently writing a program to help me with some database administration. It's supposed to execute commands in MariaDB. I thought since this is a CLI application I can just do that with os.system, but I'm having problems doing so. So lets say I have the following code
import os
os.system('mysql --user=%s --password=%s' %(user, password)
os.system('USE database;')
This code logs me into MariaDB, but it does not execute the second command to choose the database. Is this possible with os.system, and if not, what are my alternatives? Thanks.
Edit: I tried using subprocess instead, which gives me another problem: It immediately exits MariaDB after logging in.

I recomand you to use Subprocess instead of os python module, using Popen
try to check this link out :
Calling an external command in Python

Console window closes abruptly while using windows task schedular to run Python script

I have written some Python code to automate a task. Then I scheduled the Python script to execute twice a week using windows task scheduler. The task runs but there are two issues.
The console prints some error. It is strange because when I run the script manually after opening command prompt everything works as expected. This is what I do manually.
cd directory
directory>script.py
Inside the task scheduler I have directly specified the location of the script to run as C:\full\path\to\script.py
Second issue is that I can't even diagnose the error because the console closes as soon as it executes the script. This is despite the fact that I have added a dummy input command at the end of script like this:
All my Python code
input('Press any key to exit')
I also tried to keep the console open by using time.sleep(60) after importing the time module.
Can anyone tell me how can I keep the console open. Let me repeat that I am running the script using windows task scheduler. Running the script manually generates no error.
Thanks.

How to Use Python to execute initial commands over the terminal and then continue use

I have looked into using pxssh ,subprocess and paramiko but have found no success. What I am ultimately trying to do is figure out a way to not only use SSH to access a server and execute commands using a python script and finish there, but also have it open an instance of the terminal after executing all the commands for continued use.
Currently the server has modules that clients have to manually activate using commands after they have established an SSH connection.
For example:
module python
This command would give the user access to python.
Following this the user would then be able to use python and all its commands through the ssh connection in the terminal.
The issue I have with the methods listed earlier for executing these commands is that it does not display an instance of the terminal. It successfully executes the commands but since these commands have to be executed every time a new SSH connection is established it's worthless unless I can get essentially a copy of the terminal that the Python script executed and loaded up all the modules with.
Does any one have a solution to this? I've scoured the web for hours to no success.
This is a very difficult issue to explain so if anything is unclear please ask me and I will try my best to rephrase things. I am very new to all this.