mail at timgolden.me.uk
Tue Jun 30 09:09:43 EDT 2009
> so why this does not work?
> 1 #!/usr/bin/python
> 3 import threading
> 5 e = threading.Event()
> 6 t = threading.Timer(3.0, e.set())
> 7 t.start()
> 8 while not e.isSet():
> 9 print "stuff ",
> it does *NOT* print (but it should, shouldn't it?), then exits after 3
> sec but with error:
Nice try, but you're passing *the result of calling e.set*
as the function parameter to Timer. And the result of calling
e.set () is None. So you're passing None as the function-to-call.
Which it does. And then...
> TypeError: 'NoneType' object is not callable
Try passing the function instead:
threading.Timer (3.0, e.set).start ()
More information about the Python-list