#!/usr/bin/env python
# FIT2022 Lab 2 example1a.py
import time
from threading import *

class ProgramA(Thread):
   label = "Program A"
   def __init__(self,label):
      Thread.__init__(self)
      self.label = self.label+" "+label
   
   def start(self):
      Thread.start(self)
   
   def run(self):
      for i in range(50):
         print self.label,i
         time.sleep(0.5)
   

class ProgramB(Thread):
   label = "Program B"
   def __init__(self,label):
      Thread.__init__(self)
      self.label = self.label+" "+label
   
   def start(self):
      Thread.start(self)
   
   def run(self):
      for i in range(12):
         print "                       ",self.label,i*i  
         time.sleep(2)

process1 = ProgramA("process 1")
process2 = ProgramA("process 2")
process3 = ProgramB("process 3")

process1.start()
process2.start()
process3.start()

process1.join()
process2.join()
process3.join()