Check if app is running, if not, launch it

launch_app_if_not_running.py

#!/usr/bin/python

from AppKit import NSWorkspace, NSBundle, NSRunningApplication
import sys

# app to look for and launch if not running
app_name = 'OneDrive'
app_bundle_id = 'com.microsoft.OneDrive'

# hide the python rocket ship
bundle = NSBundle.mainBundle()
info = bundle.localizedInfoDictionary() or bundle.infoDictionary()
info['LSUIElement'] = '1'

# get the shared workspace object
workspace = NSWorkspace.sharedWorkspace()

# check if app is running - if not - launch it
if NSRunningApplication.runningApplicationsWithBundleIdentifier_(app_bundle_id):
	print('%s is Running!' % app_name)
	sys.exit(0)
else:
	print('%s is NOT running... launching...' % app_name)
	workspace.launchApplication_(app_name)
	sys.exit(0)