python2/session22(a).py at master · Ayu-99/python2 · GitHub

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# Asynchronous -> Parallel(May Lead to mixed output)
# Synchronous  -> When there are multiple threads and they are accessing the same shared object, then we need
# synchronisation
import threading
import time


# Lock Object
lock = threading.Lock()
class Printer:
    def printDocuments(self, docName, times):
        lock.acquire()

        for i in range(1, times+1):
            print(">> Printing {} Copy#{}".format(docName, i))
            time.sleep(1)

        lock.release()

class Desktop(threading.Thread):
    def attachPrinter(self, printer):
        self.printer = printer

    def run(self):
        self.printer.printDocuments("LearningPython.pdf", 10)


class Laptop(threading.Thread):
    def attachPrinter(self, printer):
        self.printer = printer

    def run(self):
        self.printer.printDocuments("LearningJava.pdf", 10)

printer = Printer()
# printer.printDocuments("LearningPython.pdf", 10)

desktop = Desktop()
desktop.attachPrinter(printer)
desktop.start()

laptop = Laptop()
laptop.attachPrinter(printer)
laptop.start()