#!/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)

n_printer(5)
n_printer(10)
n_printer(15)