old_contents: # http://code.activestate.com/recipes/577187-python-thread-pool/
  
  from Queue import Queue
  from threading import Thread
  
  class Worker(Thread):
      """Thread executing tasks from a given tasks queue"""
      def __init__(self, tasks):
          Thread.__init__(self)
          self.tasks = tasks
          self.daemon = True
          self.start()
      
      def run(self):
          while True:
              func, args, kargs = self.tasks.get()
              try: func(*args, **kargs)
              except Exception, e: print(e)
              self.tasks.task_done()
  
  class ThreadPool:
      """Pool of threads consuming tasks from a queue"""
      def __init__(self, num_threads):
          self.tasks = Queue(num_threads)
          for _ in range(num_threads): Worker(self.tasks)
  
      def add_task(self, func, *args, **kargs):
          """Add a task to the queue"""
          self.tasks.put((func, args, kargs))
  
      def wait_completion(self):
          """Wait for completion of all the tasks in the queue"""
          self.tasks.join()
  
new_contents: # http://code.activestate.com/recipes/577187-python-thread-pool/
  
  from Queue import Queue
  from threading import Thread
  
  class Worker(Thread):
      """Thread executing tasks from a given tasks queue"""
      def __init__(self, tasks):
          Thread.__init__(self)
          self.tasks = tasks
          self.daemon = True
          self.start()
      
      def run(self):
          while True:
              func, args, kargs = self.tasks.get()
              try: func(*args, **kargs)
              except Exception as e: print(e)
              self.tasks.task_done()
  
  class ThreadPool:
      """Pool of threads consuming tasks from a queue"""
      def __init__(self, num_threads):
          self.tasks = Queue(num_threads)
          for _ in range(num_threads): Worker(self.tasks)
  
      def add_task(self, func, *args, **kargs):
          """Add a task to the queue"""
          self.tasks.put((func, args, kargs))
  
      def wait_completion(self):
          """Wait for completion of all the tasks in the queue"""
          self.tasks.join()
  
subject: Update ThreadPool.py