{"id":7054,"date":"2023-11-01T15:27:12","date_gmt":"2023-11-01T09:57:12","guid":{"rendered":"https:\/\/python-programs.com\/?p=7054"},"modified":"2023-11-10T12:11:35","modified_gmt":"2023-11-10T06:41:35","slug":"create-a-thread-using-class-in-python","status":"publish","type":"post","link":"https:\/\/python-programs.com\/create-a-thread-using-class-in-python\/","title":{"rendered":"Create a Thread using Class in Python"},"content":{"rendered":"

Creating a Thread using Class in Python<\/h2>\n

In this article, we will discuss how we can create thread in python by extending class from Thread class or calling a member function of the class.<\/p>\n

Python provides a threading module to create and manage threads.<\/p>\n

Extend Thread class to create Threads :<\/h3>\n

Let’s create a FileLoadTh<\/code> class by extending Thread class provided by the threading module where it mimics functionality of a File loader and it’s run()<\/code> method sleeps for sometime.<\/p>\n

When we start thread by calling start()<\/code> function, it will invoke run() method of Thread class and overriden run()<\/code> method will be executed which may contain any custom implementation.<\/p>\n

It is better to wait for other threads to finish calling join()<\/code> method on FileLoaderTh<\/code> class object before returning from main thread.<\/p>\n

from threading import Thread\r\nimport time\r\n# FileLoadTh extending Thread class\r\nclass FileLoaderTh(Thread):\r\n   def __init__(self, fileName, encryptionType):\r\n       # Calling Thread class's init() function\r\n       Thread.__init__(self)\r\n       self.fileName = fileName\r\n       self.encryptionType = encryptionType\r\n   # Overriding run() of Thread class\r\n   def run(self):\r\n       print('Loading started from file : ', self.fileName)\r\n       print('Encryption Type : ', self.encryptionType)\r\n       for i in range(5):\r\n           print('Please wait loading... ')\r\n           time.sleep(3)\r\n       print('Loading finished from file : ', self.fileName)\r\ndef main():\r\n   # Create an object of Thread\r\n   th = FileLoaderTh('threadDemo.csv','DOC')\r\n   # calling Thread class start() to start the thread\r\n   th.start()\r\n   for i in range(5):\r\n       print('Inside main function-------')\r\n       time.sleep(3)\r\n   # Wait for thread to finish\r\n   th.join()\r\nif __name__ == '__main__':\r\n   main()\r\n<\/pre>\n
Output :\r\nLoading started from file :\u00a0 threadDemo.csv\r\nInside main function-------\r\nEncryption Type :\u00a0 DOC\r\nPlease wait loading...\r\nInside main function-------\r\nPlease wait loading...\r\nInside main function-------\r\nPlease wait loading...\r\nPlease wait loading...\r\nInside main function-------\r\nPlease wait loading...\r\nInside main function-------\r\nLoading finished from file :\u00a0 threadDemo.csv<\/pre>\n
Create a Thread from a member function of a class :<\/h3>\n
Now let’s create a thread that executes loadcont()<\/code> memeber function of FileLoadTh<\/code> class. For that we can create a object and then pass the function with object to target argument of Thread class constructor.<\/p>\n
So both main()<\/code> function and loadcont()<\/code> member function will run in parallel and at the end main() function will wait for other threads calling join()<\/code> function on the same object.<\/p>\n
import threading\r\nimport time\r\nclass FileLoaderTh():\r\n   def __init__(self):\r\n       pass\r\n   \r\n   def loadcont(self, fileName, encryptionType):\r\n       print('Loading started from file : ', fileName)\r\n       print('Encryption Type : ', encryptionType)\r\n       for i in range(5):\r\n           print('Loading ... ')\r\n           time.sleep(3)\r\n       print('Loading finished from file : ', fileName)\r\ndef main():\r\n   # Creating object of FileLoaderTh class\r\n   fileLoader = FileLoaderTh()\r\n   # Create a thread using member function of FileHolderTh class\r\n   th = threading.Thread(target=fileLoader.loadcont, args=('threadDemo.csv','DOC', ))\r\n   # Start a thread\r\n   th.start()\r\n   # Print some logs in main thread\r\n   for i in range(5):\r\n       print('Inside main Function')\r\n       time.sleep(3)\r\n   # Wait for thread to finish\r\n   th.join()\r\nif __name__ == '__main__':\r\n   main()\r\n<\/pre>\n
Output :\r\nLoading started from file :\u00a0 threadDemo.csv\r\nEncryption Type :\u00a0 DOC\r\nInside main Function\r\nLoading ...\r\nInside main Function\r\nLoading ...\r\nInside main Function\r\nLoading ...\r\nInside main Function\r\nLoading ...\r\nLoading ...\r\nInside main Function\r\nLoading finished from file :\u00a0 threadDemo.csv<\/pre>\n
 <\/p>\n","protected":false},"excerpt":{"rendered":"
Creating a Thread using Class in Python In this article, we will discuss how we can create thread in python by extending class from Thread class or calling a member function of the class. Python provides a threading module to create and manage threads. Extend Thread class to create Threads : Let’s create a FileLoadTh …<\/p>\n
  Create a Thread using Class in Python<\/span> Read More »<\/a><\/p>\n","protected":false},"author":9,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"spay_email":"","jetpack_publicize_message":"","jetpack_is_tweetstorm":false,"jetpack_publicize_feature_enabled":true},"categories":[5],"tags":[],"yoast_head":"\nCreate a Thread using Class in Python - Python Programs<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/python-programs.com\/create-a-thread-using-class-in-python\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Create a Thread using Class in Python - Python Programs\" \/>\n<meta property=\"og:description\" content=\"Creating a Thread using Class in Python In this article, we will discuss how we can create thread in python by extending class from Thread class or calling a member function of the class. 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