Multithreading in python using "start_new_thread" from "_thread" library in Python 3.x

Multithreading_script_1.py

#!/usr/bin/env python3

from _thread import start_new_thread

def count_to_n(id, n):
    """
        Count numbers from 0 to n - 1
        Parameters:
            id: The identifier for the function
            n: The number to count upto (exclusive of n)
    """
    print("%s will count to %d" % (id, n))
    for i in range(n):
        print("%s at %d / %d" % (id, i, n))
    print("%s ended" % id)

if __name__ == "__main__":
    start_new_thread(count_to_n, ("Func-1", 10))
    start_new_thread(count_to_n, ("Func-2", 20))
    # Hold execution until Ctrl + C is pressed
    try:
        while 1:
            pass
    except KeyboardInterrupt:
        print("\b\bEnding program")