# CS 450; Thread example 5
# Create and join threads in python
# version 2014-01-26 11:26 AM
#
import threading
import time
from threading import Thread

def main():
	print("Start then join each thread\n")
	for i in range(5):
		# Create a thread that sleeps for 6-i sec
		thd = Thread(target=say_hello, \
		  args=(6-i,), \
		  name="mythread_" + str(i))
		thd.start()
		print('starting {}'.format(thd.name))
		thd.join()

def say_hello(sleep_seconds):
	myname = threading.current_thread().name
	print('hello from {}'.format(myname))
	time.sleep(sleep_seconds)
	print('goodbye from {}'.format(myname))

main()	# run the main program

# Sample output:
#
# hello from mythread_0
# starting mythread_0
# goodbye from mythread_0
# hello from mythread_1
# starting mythread_1
# goodbye from mythread_1
# hello from mythread_2
# starting mythread_2
# goodbye from mythread_2
# hello from mythread_3
# starting mythread_3
# goodbye from mythread_3
# hello from mythread_4
# starting mythread_4
# goodbye from mythread_4