Thread in Python

Thread in Python:-

 

Thread is a collection of light-weight subprocess to execute the program, in the application, we will use Multithreading to implement multitasking.

using Multi-threading we can execute more than one process simultaneously in a single resource.

O/s is the best example of multi-threading because it can execute more than one program simultaneously.

When we want to create a game application then parallel execution is mandatory, which can be managed by the Multi-threading process.



Thread Life Cycle:-

Syntax of threading:-

import threading

class Classname(threading.Thread):
      functionality
      ........

import threading

import time

class ThreadExample(threading.Thread):

    def run(self):

        for i in range(1,10):

            print("Process is "+str(i))

            time.sleep(1)

t1 = ThreadExample()  #new state ,it will provide memory to store data

t1.start()  #start() is the predefine method which will convert thread process to runnable state to running state

Multithreading:-  If we start more then one Thread object simultaneous then it is called multithreading.

It is used to execute multiple programs set simultaneous.

 

import threading

import time

class ThreadExample(threading.Thread):

    def run(self):

        for i in range(1,10):

            print("Process is "+str(i))

            time.sleep(1)

t1 = ThreadExample()  #new state ,it will provide memory to store data

t1.start()  #start() is the predefine method which will convert thread process to runnable state to running state

t2 = ThreadExample()

t2.start()

t3 = ThreadExample()

t3.start()

            

Thread Process Synchronization:-

using this we can provide multi-threading execution is waiting for the state until the current thread process completed. when the process completed then join() will notify another thread and it will be executed .using the join()  method we can synchronize the thread process.

import threading

import time

class ThreadExample(threading.Thread):

    def run(self):

        for i in range(1,10):

            print("Process is "+str(i))

            time.sleep(1)

t1 = ThreadExample()  #new state ,it will provide memory to store data

t1.start()  #start() is the predefine method which will convert thread process to runnable state to running state

t1.join()

t2 = ThreadExample()

t2.start()

t2.join()

t3 = ThreadExample()

t3.start()

            

Example of Thread?

import threading

import time

class Thread1(threading.Thread):

    def __init__(self):

        super(Thread1, self).__init__()

        self.num=int(input("enter number"))

    def run(self):

        for i in range(1,11):

            print(self.num*i)

            time.sleep(1)

class Thread2(Thread1):

    def __init__(self):

       super(Thread2, self).__init__()

    def run(self):

        self.s=''

        self.fact=1

        for i in range(self.num,0,-1):

            self.s = self.s + str(i) + "*"

            self.fact=self.fact*i

            time.sleep(1)

        print("result is "+self.s+" = "+str(self.fact))

t1 = Thread1()

t1.start()

t1.join()

t2 = Thread2()

t2.start()

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