#!/usr/bin/python3
# -*- coding: utf-8 -*-

import threading
import time


def n_printer(num: int) -> None:
    for i in range(num):
        print(i, threading.current_thread().name)
        time.sleep(0.5)


print("Before calling function:")
print(threading.current_thread().name)

thread1 = threading.Thread(target=n_printer, args=(5,), name="t5")
thread2 = threading.Thread(target=n_printer, args=(10,), name="t10")
thread3 = threading.Thread(target=n_printer, args=(15,), name="t15")

thread1.start()
thread2.start()
thread3.start()