open a terminal from python

You could do this:

os.system("gnome-terminal -e 'bash -c \"sudo apt-get update; exec bash\"'")

There are a few choices:

• add ; read -p "Hit ENTER to exit" to the end of the command line.
• add ; sleep 10 to the end of the command line to wait a bit, then exit.

• Configure gnome terminal:

  Go to the "Edit" menu and click "Current Profile". Click on the "Title and Command" tab. In there, there is a setting called "When command exits". Change it to "hold the terminal open". You could also create a new profile.