Pull down a calendar file and merge it into a local one

calcram.py

#!/usr/bin/python

import vobject
import sys
import os
from urllib import urlopen

# Hack for RFC violations
vobject.icalendar.escapableCharList = '\\;,Nn"\'&'

url = "THE ICS CALENDAR THAT WILL BE UPDATED THAT YOU WANT TO MERGE FROM"
calendar = "YOUR LOCAL ICS FILE THAT YOU WANT EVERYTHING COMBINED INTO"

fnew = urlopen(url).read()
fcal = open(calendar)

newcal = vobject.readOne(fnew)
calcal = vobject.readOne(fcal)

fcal.close()

for ev in newcal.vevent_list:
	for derp in calcal.vevent_list:
		if ev.contents["uid"] == derp.contents["uid"]:
			calcal.vevent_list.remove(derp)
	calcal.add(ev)

fout = open(calendar+".tmp","w")

fout.write(calcal.serialize())

fout.close()

os.rename(calendar+".tmp", calendar)