Google Maps: Get tile image from latlong coordinate

latlong_tile.py

import math

def latlongToTile(latlongDegs, zoom):
    n = 2 ** zoom
    latRads = math.radians(latlongDegs[0])
    tileX = n * ((latlongDegs[1] + 180.0) / 360.0)
    tileY = n * (1.0 - (math.log(math.tan(latRads) + 1.0/math.cos(latRads)) / math.pi)) / 2.0
    return (int(tileX), int(tileY))
    
def latlongToUrl(latlongDegs, zoom):
    ll = latlongToTile(latlongDegs, zoom)
    url = "http://mt1.google.com/vt/lyrs=y&x=%d&y=%d&z=%d" % (ll[0], ll[1], zoom)
    return url