Запуск потоков в цикле

import virtual as v
 
a = v.start('a', 'b', 1, 100000, 'thread1')
b = v.start('c', 'd', 100000, 200000, 'thread2')
c = v.start('e', 'f', 200000, 300000, 'thread3')
 
 thread1 = Thread(target=a.start)
 thread2 = Thread(target=b.start)
 thread3 = Thread(target=c.start)
 thread1.start()
 thread2.start()
 thread3.start()

from multiprocessing import Process
import virtual as v
 
a = v.start('a', 'b', 1, 100000, 'thread1')
b = v.start('c', 'd', 100000, 200000, 'thread2')
c = v.start('e', 'f', 200000, 300000, 'thread3')
 
 thread1 = Process(target=a.start)
 thread2 = Process(target=b.start)
 thread3 = Process(target=c.start)
 thread1.start()
 thread2.start()
 thread3.start()

# -*- coding: utf-8 -*-
import random
import time
from threading import Thread
 
 
class MyThread(Thread):
    """
    A threading example
    """
    
    def __init__(self, name):
        """Инициализация потока"""
        Thread.__init__(self)
        self.name = name
    
    def run(self):
        """Запуск потока"""
        amount = random.randint(3, 15)
        time.sleep(amount)
        msg = "%s is running" % self.name
        print(msg)
    
def create_threads():
    """
    Создаем группу потоков
    """
    for i in range(5):
        name = "Thread #%s" % (i+1)
        my_thread = MyThread(name)
        my_thread.start()
 
 
if __name__ == "__main__":
    create_threads()

        if (i+1) % 20 == 0: 
            my_thread.join()

from multiprocessing import Process
 
class multiprocessingName(Process):
    def __init__(self, name, firstname):
        Process.__init__(self)
        self.name = name
        self.firstname = firstname
    
    def run(self):
        print('hello', self.firstname)
 
 
def main(data):
    for item, row in enumerate(data):
        p = multiprocessingName(name="Поток %s" % (item + 1), firstname=row)
        p.start()
        
 
if __name__ == '__main__':
    data = ['bob', 'dark', 'sofi']
    main(data)