Python: multi-processing.py

import multiprocessing

def thread_func(): 
    print "thread in"
    while True:
        pass

if __name__ == "__main__":
    t1 = multiprocessing.Process(target = thread_func)
    t1.start()

    t2 = multiprocessing.Process(target = thread_func)
    t2.start()
    
    t1.join()
    t2.join()

Python: multi-threading.py

from threading import  Thread                                                                                       

def thread_func(): 
    print "thread in"
    while True:
        pass

if __name__ == "__main__":
    t1 = Thread(target = thread_func)
    t1.start()

    t2 = Thread(target = thread_func)
    t2.start()
    
    t1.join()
    t2.join()