Closes #7308. Adds timezone check functionality to the Python Binding…

…s (matches Perl bindings). Useful for Live CD purposes to query the MBE for Timezone/Time.

git-svn-id: http://svn.mythtv.org/svn/trunk@22395 7dbf422c-18fa-0310-86e9-fd20926502f2

mythtv/bindings/python/MythTV/MythTV.py

@@ -14,7 +14,7 @@
 import socket
 import code
 import re
-from datetime import datetime
+from datetime import datetime, tzinfo, timedelta
 from time import mktime
 
 from MythDB import *
@@ -483,6 +483,24 @@ def getLastGuideData(self):
 		"""
 		return self.backendCommand('QUERY_GUIDEDATATHROUGH')
 
+	def getTimeZone(self):
+		"""
+		Returns a tuple containing Zone ID, UTC offset, and ISO format date
+		"""
+		return tuple(self.backendCommand('QUERY_TIME_ZONE').split(BACKEND_SEP))
+
+	def getTime(self):
+		"""
+		Returns an "aware" datetime object of the backend's current time
+		"""
+		class tz(tzinfo):
+			def __init__(self,offs): self.offset = int(offs)
+			def tzname(self): return "GMT%d" % (self.offset/3600)
+			def dst(self,dt): return timedelta(0)
+			def utcoffset(self,dt): return timedelta(seconds=self.offset)
+		tup = self.getTimeZone()
+		return datetime.strptime(tup[2],"%Y-%m-%dT%H:%M:%S").replace(tzinfo=tz(tup[1]))
+
 	def joinInt(self,high,low):
 		"""
 		Returns a single long from a pair of signed integers