thread_python.py

# This python code is simple program for multi-threading
import threading 
import os

def add(num1,num2):
	# find the thread ID
	print("Addition is assigned to thread: {}".format(threading.current_thread().name))
	print("ID of process running addition: {}".format(os.getpid()))
	# This function used for addition of two number
	print("addition result = ",num1+num2)

def mul(num1,num2):
	print("Multiplication is assigned to thread: {}".format(threading.current_thread().name))
	print("ID of process running multiplication: {}".format(os.getpid()))
	# This function used for multiplication of two number
	print("Multiplication result = ",num1*num2)


def div(num1,num2):
	print("Multiplication is assigned to thread: {}".format(threading.current_thread().name))
	print("ID of process running div: {}".format(os.getpid()))
	# This function used for floor operation 
	print("Floor division result = " , num1//num2)

if __name__ == "__main__":
	print("main() is assigned to thread: {}".format(threading.main_thread().name))
	print("ID of process running addition: {}".format(os.getpid()))
	# Creating thread
	th1 = threading.Thread(target=add, args=(10,20),name='th1')
	th2 = threading.Thread(target=mul,args=(30,40),name='th2')
	th3 = threading.Thread(target=div,args=(200,10),name='th3')

	# Start thread1
	th1.start()

	# Start thread2
	th2.start()

	# Start thread3
	th3.start()

	#Once the threads start, the current program (you can think of it like a main thread) also keeps on executing.
	# first wait for the completion of t1 and then t2.
	# wait untill thread 1 is completely executed
	th1.join()

	# wait untill thread 2 is completely executed
	th2.join()

	# wait untill thread 3 is completely executed
	th3.join()