Python协程中使用上下文

x: 7 start handling outer request-8 start handling inner request-8, with x: 8 start handling outer request -9 start handling inner request-9, with x: 9 finish handling inner request-3, with x: 3 finish handling -9, with x: 9 finish handling outer request-9 with request_id in context 9 finish handling inner request -9 with request_id in context -1 start handling inner request-9, with x: 9 finish handling inner request -9, with x: 9 obj: <A|x: 9> in outer request-9 finish handling outer request-9 with request_id in context