human
Write me a the Python program you requested given the following:
I am working on the file "Programming/LANG_Python/2018-01-17_threading.ipynb".
The first task is:
Example 6: subclassing thread (simple)
Can you write Python program for it?
assistant
#Here is the Python program you requested.

logging.basicConfig(level=logging.DEBUG,
                    format='(%(threadName)-10s) %(message)s')

class SimpleThread(threading.Thread):
    def run(self):
        logging.debug('Running now...')
        return
    
for i in range(4):
    t = SimpleThread()
    t.start()