python - PySide: Returning a value from a slot -

the pyside documentation states slots can have return values, have yet figure out how make so.

i couldn't find usable code samples on this, i've added decorator docs suggest:

def testslot(self):     print('testslot called')     return 'return value return value return value' 

and i'm trying capture return value this:

ret = foo.testsignal.emit() 

but it's not working. test code, can find here, crashes this error output. appreciated!

edit: i've removed decorator, solves crashing issue, still doesn't return value want return.

running script give me this:

foo.testsignal.emit()
testslot called
true

i'm afraid think not possible. signals , slots loosely coupled together, emitting signal not directly call slot, , therefore cannot retrieve "its" return value.

this might clearer if think this:

you can connect 2 different slots (of e.g. 2 different classes), return different values, to 1 signal. of 2 return values supposed reach variable try assign?

what mean this: different, , allows return values via "invoking" method on metaobject system "name".