gistfile1.py

from __future__ import print_function
import threading
import time
ending = False
def response():
    while not ending:
        print('.')
        time.sleep(1)

def fib(num):
    time.sleep(1)
    if num < 2:
        return num
    return fib(num-1) + fib(num-2)

thread = threading.Thread(target=response, name='')
thread.start()

print(fib(3))
ending = True