Check for Beta build on macOS 10.10 and greater

currentBuildIsSeed.py

#!/usr/bin/python

import objc

from Foundation import NSBundle, NSClassFromString

SeedingBundle = NSBundle.bundleWithPath_('/System/Library/PrivateFrameworks/Seeding.framework')
objc.loadBundleFunctions(SeedingBundle, globals(), [("currentBuildIsSeed", '@')])
buildInfo = NSClassFromString('SDBuildInfo')

if buildInfo.currentBuildIsSeed():
	print "Build is seed: YES"
else:
	print "Build is seed: NO"