Bot prevents character to be dropped out for inactivity sending keyboard "SPACE" command in a random intervals

Simple WoW bot

# -*- coding: utf-8 -*-

from time import sleep
from random import randrange
try:
    import win32api
    import win32con
    import win32gui
except Exception, e:
    print(e)
    raw_input('-->')

##### Settings ####
INTERVAL_FROM = 80  # seconds
INTERVAL_TILL = 160  # seconds
###################

def random_wait():
    """
        Wait seconds till next event
    """
    return randrange(INTERVAL_FROM, INTERVAL_TILL)

def press_space():
    """
        Send "space" to the current application
    """
    try:
        print("Bot initiated...")
        while True:
            # get hwnd for Wow-64.exe which is 'World of Warcraft'
            hwnd = win32gui.FindWindow(None, 'World of Warcraft')
            print hwnd
            if hwnd == 0:
                print("Process not found...")
            else:        
                interval = random_wait()
                print("Space keypress event in %s seconds..." % interval)
                sleep(interval)
                win32api.SendMessage(
                    hwnd, win32con.WM_KEYDOWN, win32con.VK_SPACE, 0
                )
                sleep(1)
                win32api.SendMessage(
                    hwnd, win32con.WM_KEYUP, win32con.VK_SPACE, 0
                )
                print("Space pressed...")
    except Exception, e:
        print(e)
        raw_input('--> ')

press_space()