I found the answer myself here at http://twistedmatrix.com/pipermail/twisted-python/2005-September/011490.html I followed the code and implemented to my class start and stop methods which solved my problem with taking out object instances from loop testing. Lada Ladislav Andel wrote:

Hello, I have got following code:

hosts = ['google.com','yahoo.com']

for host in hosts: c = PingContext(num, host) ctx.append(c) l = task.LoopingCall(c.ping) l.start(30.0, False)

I create a few object instances and pinging those hosts every 30 secs. I will have another loop through LoopingCall, where I will be checking dynamically changing list and comparing with already been checking hosts. If there is a host missing in the list I will delete the object instance which is not in the list. How can I remove it that it will not be anymore called by LoopingCall? Or how can I add a new object instance to the LoopingCall in case there is new host in the list?

Hopefully, it's understandable.

Thank you, Lada

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