Modify this threading example to use, exclusively, multiprocessing, instead of threading. import threading import time class BankAccount(): def init(self, name, balance): self.name = name self.balance = balance def str(self): return self.name # These accounts are our shared resources account1 = BankAccount("account1", 100) account2 = BankAccount("account2", 0) class BankTransferThread(threading.Thread): def init(self, sender, receiver, amount): threading.Thread.init(self) self.sender = sender self.receiver = receiver self.amount = amount def run(self): sender_initial_balance = self.sender.balance sender_initial_balance -= self.amount # Inserting delay to allow switch between threads time.sleep(0.001) self.sender.balance = sender_initial_balance receiver_initial_balance = self.receiver.balance receiver_initial_balance += self.amount # Inserting delay to allow switch between threads time.sleep(0.001) self.receiver.balance = receiver_initial_balance if name == "main": threads = [] for i in range(100): threads.append(BankTransferThread(account1, account2, 1)) for thread in threads: thread.start() for thread in threads: thread.join() print(account1.balance) print(account2.balance)

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Question

Modify this threading example to use, exclusively, multiprocessing, instead of threading.

import threading
import time

class BankAccount():
def __init__(self, name, balance):
self.name = name
self.balance = balance

def __str__(self):
return self.name

# These accounts are our shared resources
account1 = BankAccount("account1", 100)
account2 = BankAccount("account2", 0)

class BankTransferThread(threading.Thread):
def __init__(self, sender, receiver, amount):
threading.Thread.__init__(self)
self.sender = sender
self.receiver = receiver
self.amount = amount

def run(self):
sender_initial_balance = self.sender.balance
sender_initial_balance -= self.amount
# Inserting delay to allow switch between threads
time.sleep(0.001)
self.sender.balance = sender_initial_balance

receiver_initial_balance = self.receiver.balance
receiver_initial_balance += self.amount
# Inserting delay to allow switch between threads
time.sleep(0.001)
self.receiver.balance = receiver_initial_balance

if __name__ == "__main__":

threads = []

for i in range(100):
threads.append(BankTransferThread(account1, account2, 1))

for thread in threads:
thread.start()

for thread in threads:
thread.join()

print(account1.balance)
print(account2.balance)

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