p4checkout.py

import sublime, sublime_plugin
import os, stat
import subprocess
import _thread

class P4Checkout(sublime_plugin.EventListener):
  def on_modified(self, view):
		def checkout(file):
			output = subprocess.check_output(["p4", "edit", file], shell=True)
			print(output.decode())

		fileToCheckout = view.file_name()
		if fileToCheckout != None:
			fileMode = os.stat(fileToCheckout)[stat.ST_MODE]
			if (not fileMode & stat.S_IWRITE):
				_thread.start_new_thread(checkout, (fileToCheckout,))