python.net - Does Python for .NET event handler execute in a worker thread -

i have python .net (2.7) script subscribes event defined in .net assembly. when event fires , python-based event handler called, handler executing in python's main thread or in worker thread?

... def myeventhandler(source, args):     print 'received message: ' + args.message ... dotnetobject.someevent += myeventhandler ... 

i figured must worker thread when put line of code in handler:

print threading._active 

it reported main thread:

{8920: <_mainthread(mainthread, started 8920)>}

how can tell thread given line of python executing in?

update: okay, found threading.current_thread(). outside of handler returns:

<_mainthread(mainthread, started 7064)>

while inside handler returns

<_dummythread(dummy-1, started daemon 7916)>

so "dummythread" worker thread? why didn't show in threading._active?

thanks.

dummythreads worker threads , show in call:

threading.enumerate() 

so, yes, event handler executing in worker thread.