Mine

import win32guidef get_window(hwnd,ret_hwnd):    global ret_hwnd    if win32gui.GetWindowText(hwnd) is 'Render':        ret_hwnd = hwnd        return Falseif __name__ == '__main__':    hwnd = win32gui.FindWindow('Google Earth')    ret_hwnd = ''    win32gui.EnumChildWindows(hwnd,get_window,ret_hwnd)    print ret_hwnd