global threading.Lock not locking correctly?

[Laura Creighton]

> # My logic tells me this should never print 'OOPS', yet it does.
> # Can someone tell me why? (P.S. this is simplified example code)
> 
> import threading, time
> 
> class testthread(threading.Thread):
>   
>   def run(self):    
>     for x in range(40):
>       
>       global lock
>       global visitors
>       
>       lock.acquire      
>       
>       visitors += 1
>       if visitors > 1:
>         print 'OOPS!'+str(visitors),
>       else:
>         print '.',
>       visitors -= 1
>       
>       lock.release
> 
>       #time.sleep(0.01) #less OOPS of course
>     
> visitors = 0
> lock = threading.Lock()
> 
> for i in range(10):
>   testthread().start()
> 
> -- 
> http://mail.python.org/mailman/listinfo/python-list

You want lock.aquire() and lock.release()

Laura