Forcing automatic timezone discovery with pyobjc on OS X

autotimezone.py

# Tested on 10.11
# Assumes your network is in a state to actually do the discovery
# (Generally this means wifi enabled on your device and network stack is up)
#
# Note: When this code exits, it will generate an error message - this is to be expected!
# Error will look like:
#  Python[3056:158489] PyObjC: Exception during dealloc of proxy: Cannot remove an observer <TimeZonePref 0x7f846b4b6710>
#  for the key path "enabled" from <ATZAdminPrefererences 0x7f846b502a30> because it is not registered as an observer.
#
# This is because we're cheating with the initialization of a TimeZonePref class to get cheap access to 
# startAutoTimeZoneDaemon, bypassing proper event monitoring attachment.
# 
# This error is ok / harmless.

from Foundation import NSBundle
TZPP = NSBundle.bundleWithPath_("/System/Library/PreferencePanes/DateAndTime.prefPane/Contents/Resources/TimeZone.prefPane")
TimeZonePref = TZPP.classNamed_('TimeZonePref')
pref = TimeZonePref.alloc().init()
result = pref._startAutoTimeZoneDaemon_(0x1)