i would like to unpack the arguments of a mocked method. I have a mocked subscriber which is called by the code under test and i would like to verify the invocation of the notify() method. class Subscriber: def notify(self, event): pass I'm using the following snippet to unpack the arguments and verify two invocations: calls= self.subscriber.notify.call_args_list event1 = calls[0][0][0] event2 = calls[1][0][0] assert_that(event1, instance_of(CreatedEvent)) assert_that(event1.file.name, equal_to("foo.txt")) But the two lines to unpack the events are very clumsy and far away from readable code. Does somebody know a better approach to unpack the arguments? Thanks a lot! Continue reading...