python实现截取屏幕保存文件,删除N天前截图的例子

from PIL import ImageGrabimport timeimport scheduleimport osimport shutilimport datetimedays = -3# 截屏def savepic(): im = ImageGrab.grab() now = time.strftime("%Y_%m_%d_%H_%M_%S", time.localtime()) day = time.strftime("%Y%m%d", time.localtime()) file_path_top = 'c://tmp//' if not os.path.exists(file_path_top):  os.mkdir(file_path_top) file_path = 'c://tmp//'+day+'//' if not os.path.exists(file_path):  os.mkdir(file_path) im.save(file_path+now+'.jpg')# 删除文件def deletefile():  today = datetime.datetime.now() offset = datetime.timedelta(days=days) re_date = today + offset file_dir = r'C:/tmp' for root, dirs, files in os.walk(file_dir):  for i in dirs:   if(i<=re_date.strftime('%Y%m%d')):    path = 'C://tmp//'+i    if (os.path.exists(path)):     shutil.rmtree(path)         schedule.every(60).seconds.do(savepic)schedule.every().day.at("00:30").do(deletefile)while True:  schedule.run_pending()  time.sleep(1)