如何把1的返回值得ID运用到2当中ID出，麻烦各位帮帮忙，感谢

1 hui={
"accesstoken":"227405f3-8bb8-41bd-b4b2-07e7d119de41",
"title":"效霖的故事来了",
"tab":"ask",
"content":"我是一只快乐的小黄鹂"
}
res=requests.post("http://47.100.175.62:3000/api/v1/topics",json=hui)
print(res.json())
2rew=requests.post("http://47.100.175.62:3000/api/v1/topic/：id")
print(rew.json())

res=requests.post("http://47.100.175.62:3000/api/v1/topics",json=hui)
print(res.json())
print(res.json()["topic_id"])
rew=requests.post("http://47.100.175.62:3000/api/v1/topic/{}".format(res.json()['topic_id']))