Kodi python - how to call another addon and, if not installed but present in repo, ask to install it

Question

I'm creating an addon for Kodi in python, and I need to create a link to open another addon that, if not installed but present in one of the repositories, Kodi will ask the user and install and open the addon. I've seen this before on youtube and sports devil links. If not present but in the repo, Kodi asked if you want to install it. This is about Python, NOT the "import" in addon.xml. Can anyone help?

Answer 1

I ended up doing this:

import xbmc, xbmcaddon, xbmcgui, xbmcplugin
import os
import time

def installOPENaddon(IDdoADDON):    
    pathTOaddon = os.path.join(xbmc.translatePath('special://home/addons'), IDdoADDON)

    if not os.path.exists(pathTOaddon)==True:
        xbmc.executebuiltin('InstallAddon(%s)' % (IDdoADDON))
        xbmc.executebuiltin('SendClick(11)'), time.sleep(2), xbmcgui.Dialog().ok("Add-on Install", "The addon was not present. Please wait for installation to finish.")
    else:
        pass
    if os.path.exists(pathTOaddon)==True:
        xbmc.executebuiltin('RunAddon(%s)' % (IDdoADDON))
    else:
        xbmcgui.Dialog().ok("Add-on Error", "Could not install or open add-on. Please try again...")

installOPENaddon("my.addon.id")

Answer 2

If you want to do it in a skin xml you can do this:

<onclick condition="!System.hasAddon(plugin.video.youtube)">InstallAddon(plugin.video.youtube)</onclick>