classMyExc(Exception):passimportitertoolsasyncdefagenfn():foriinitertools.count():try:yieldiexceptMyExc:passagen=agenfn()try:agen.asend(None).send(None)exceptStopIterationase:print(f"{e.value=}")athrow=agen.athrow(MyExc)try:athrow.throw(MyExc)exceptStopIterationase:print(f"{e.value=}")try:athrow.throw(MyExc)exceptRuntimeError:print("good")exceptStopIterationase:print(f"bad{e.value=}")

e.value=0e.value=1bad e.value=2

e.value=0e.value=1good