Threading condition vars

ConVarThread.py

import threading
import time

condition = threading.Condition()

def lock_door():
    global condition

    while True:
        print("Lock Thread: Door lock armed")
        condition.acquire()
        condition.wait()
        print("Lock Thread: Woke up")
        condition.release()
        print("Lock Thread: Got prey signal. Locking door...")
        time.sleep(7)
        print("Lock Thread: Lockout Period Reached.  Unlocking door.")
        time.sleep(7)


# start consumer
c = threading.Thread(name='c', target=lock_door)
c.start()

time.sleep(2) #a short nap to avoid race condition

print 'Main Thread: Sending first unlock signal (should succeed)'
condition.acquire()
condition.notifyAll()
condition.release()
time.sleep(2)

print 'Main Thread: Sending second unlock signal (should fail)'
condition.acquire()
condition.notifyAll()
condition.release()
time.sleep(15)

print 'Main Thread: Sending third unlock signal (should succeed)'
condition.acquire()
condition.notifyAll()
condition.release()