How to use the googlemaps.GoogleMaps function in googlemaps

def retrieve(endpoint, api_key):
    
    gmaps = GoogleMaps(api_key)
    url = endpoint + '?' + urllib.urlencode([("query",query)]) + '&format=text%2Fcsv'
    header = None
    print >> sys.stderr, url
    
    for line in csv.reader(urllib.urlopen(url),delimiter=","):
        if header == None:
            header = line
            continue
        addressURI = line[0]
        address = ", ".join([x for x in line[1:] if x != ""])
        try:
           lat, lng = gmaps.address_to_latlng(address)
        except GoogleMapsError:
           print >> sys.stderr, 'GoogleMapsError'
        
        print '{},{},{}'.format(addressURI,lat,lng)

def getGmapsInstance(self):
    """get a google maps wrapper instance"""
    key = self.get('googleAPIKey', None)
    if key == None:
      print "onlineServices: a google API key is needed for using the google maps services"
      return None
    # only import when actually needed
    import googlemaps
    gmap = googlemaps.GoogleMaps(key)
    return gmap

def _getGmapsInstance():
    """get a google maps wrapper instance"""
    key = constants.GOOGLE_PLACES_API_KEY
    if key is None:
        log.error("a google API key is needed for using the Google maps services")
        return None
        # only import when actually needed
    import googlemaps
    gMap = googlemaps.GoogleMaps(key)
    return gMap

def _getGmapsInstance():
    """get a google maps wrapper instance"""
    key = constants.GOOGLE_API_KEY
    if key is None:
        log.error("onlineServices: online providers:"
              " a google API key is needed for using the google maps services")
        return None
    # only import when actually needed
    import googlemaps
    gMap = googlemaps.GoogleMaps(key)
    return gMap

def getGmapsInstance(self):
        """get a google maps wrapper instance"""
        key = constants.GOOGLE_API_KEY
        if not key:
            print("onlineServices: a google API key is needed for using the google maps services")
            return None
            # only import when actually needed
        import googlemaps
        gMap = googlemaps.GoogleMaps(key)
        return gMap

#!/bin/bash

import ConfigParser
import pg8000
from pg8000 import DBAPI
import re
from googlemaps import GoogleMaps

addressRegex = r"(\b(at|on)\s((\d+|\w{2,})\s){1,2}(st(reet)?|r[(oa)]d)(\sstation|\smarket)?[,.\s])"
#addressRegex =r"(\b(at|on)\s((\d+|\w{2,})\s){1,2}(st(reet)?|r[(oa)]d)(\sstation|\smarket)?)"

currRegex = addressRegex

gmaps = GoogleMaps("ABQIAAAAUGnYtZ9Py2CWqhKA2j8WNhSV67USoQ6pUbqiV9eqnAi_hHG1PhShAENkss9dydHdndy0C9ko99g-Pg")
#gmaps = GoogleMaps("AIzaSyCw6F9tfQG6R56y9tUUm4WaI7o-D3cn7HI")

conn = DBAPI.connect(host=cfg_server, database=cfg_database,user=cfg_username, password=cfg_password)
cursor = conn.cursor()

query = "select text from tweets where geolocation is null"

cursor.execute(query)
counter = 0
for row in cursor:
    text = str(row[0])
    regexMatch = re.search(currRegex, text, re.IGNORECASE)
    if not regexMatch == None:
        #print text[:140]
        addr = regexMatch.group(0)[3:] #, text[:80]
        lraddr = addr.lower()