I'm not sure I understand what you want, but I think you can do it by adding a custom console (which is something we actually only released today :-)
Go to the "Consoles" tab, and click on the small "+" next to "Custom". This will display fields where you can enter a name for the custom console, and the command to run. For the name, enter anything you want. For the command, enter the bash command to run the script, eg.
python3.4 /home/hemantjha/my_script.py. Click on the blue checkmark button to add the custom console.
Now whenever you go to the "Consoles" tab, you can click on the custom console name, and your script will run.