Update contacts using Google contacts API

updatecontacts.py

import atom
import re
import gdata.contacts.data
import gdata.contacts.client
import gdata.gauth

# This script updates all contacts with email addresses @comlab.ox.ac.uk to
# @cs.ox.ac.uk to go along with the renaming of our department.

sourcename = "some-name-for-this-script-v1"
email = "[email protected]"
passwd = "yourpassword"

client = gdata.contacts.client.ContactsClient(source=sourcename)
client.ClientLogin(email, passwd, client.source)

query = gdata.contacts.client.ContactsQuery()
query.max_results = 2000
# Add some query data here to limit the results you get

feed = client.GetContacts(q = query)

for i, entry in enumerate(feed.entry):
    for email in entry.email:
        if re.search(".*@comlab.ox.ac.uk", email.address) != None:
            converted = re.sub("(comlab.ox.ac.uk)", "cs.ox.ac.uk", email.address)
            print "Updating %s -> %s" % (email.address, converted)
            email.address = converted
            client.Update(entry)