plpython - geopy geocode

CREATE OR REPLACE FUNCTION public.geocode_google(IN inaddress text, OUT address text, OUT longitude double precision, OUT latitude double precision)
  RETURNS record AS
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from geopy.geocoders import GoogleV3
geolocator = GoogleV3()
try:
  address, (latitude, longitude) = geolocator.geocode(inaddress,timeout=1,exactly_one=True)
  return address, longitude, latitude
except:
  return None, None, None
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  LANGUAGE plpythonu VOLATILE
  COST 100;