<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def _yield_callbacks(self):
 """Yield all callbacks set on this instance including a set whether its name was set by the user. Handles these cases: * default and user callbacks * callbacks with and without name * initialized and uninitialized callbacks * puts PrintLog(s) last """

        print_logs = []
        for item in self.get_default_callbacks() + (self.callbacks or []):
            if isinstance(item, (tuple, list)):
                named_by_user = True
                name, cb = item
            else:
                named_by_user = False
                cb = item
                if isinstance(cb, type):  # uninitialized:
                    name = cb.__name__
                else:
                    name = cb.__class__.__name__
            if isinstance(cb, PrintLog) or (cb == PrintLog):
                print_logs.append((name, cb, named_by_user))
            else:
                yield name, cb, named_by_user
        yield from print_logs