Python Multithreaded Programming

• Starting a New Thread

  #!/usr/bin/python
  
  import thread
  import time
  
  # Define a function for the thread
  def print_time( threadName, delay):
     count = 0
     while count < 5:
       time.sleep(delay)
       count += 1
       print "%s: %s" % ( threadName, time.ctime(time.time()) )
  
  # Create two threads as follows
  try:
     thread.start_new_thread( print_time, ("Thread-1", 2, ) )
     thread.start_new_thread( print_time, ("Thread-2", 4, ) )
  except:
     print "Error: unable to start thread"
  
  while 1:
     pass

• Output

  Thread-1: Thu Jan 22 15:42:17 2009
  Thread-1: Thu Jan 22 15:42:19 2009
  Thread-2: Thu Jan 22 15:42:19 2009
  Thread-1: Thu Jan 22 15:42:21 2009
  Thread-2: Thu Jan 22 15:42:23 2009
  Thread-1: Thu Jan 22 15:42:23 2009
  Thread-1: Thu Jan 22 15:42:25 2009
  Thread-2: Thu Jan 22 15:42:27 2009
  Thread-2: Thu Jan 22 15:42:31 2009
  Thread-2: Thu Jan 22 15:42:35 2009