Automatic Screen Logger Python code for Mac OSX

auto_screen_logger.py

#!/usr/bin/env python
# -*- coding: utf-8 -*-

import sys
import time
import subprocess
from datetime import datetime

argv = sys.argv
if len(argv) > 1:
  interval_sec =  int(argv[1])
else:
  interval_sec = 60*5
img_format = 'png'
savepath = '~/Pictures/Screenshot/'
prepend_filename = 'log'

print '[[[ START AUTO SCREEN LOGGER ]]]'
print '- INTERVAL   : ' + str(interval_sec) + 'sec'
print '- SAVE PATH  : ' + savepath
print '- FORMAT     : ' + img_format
print '- FILENAME   : ' + prepend_filename + '_[TIMESTAMP].[FORMAT]'
print 'kill command : \'[cmd]+c\''

while True:
  ts = datetime.now().strftime("%Y-%m-%d_%H-%M-%S")
  cmd = 'screencapture -x -t '+img_format+' '+savepath+prepend_filename+'_'+ts+'.'+img_format
  print cmd
  subprocess.call(cmd, shell=True)
  time.sleep(interval_sec)