python-如何从json获取和使用一个特定的字符串,该字符串是从api接收的?[复制品]

{
  "status": "200",
  "msg": "",
  "data": {
    "time": "1515580011",
    "video_info": [
      {
          "announcement": "{\"announcement_id\":\"6\",\"name\":\"INS\\u8d26\\u53f7\",\"icon\":\"http:\\\/\\\/liveme.cms.ksmobile.net\\\/live\\\/announcement\\\/2017-08-18_19:44:54\\\/ins.png\",\"icon_new\":\"http:\\\/\\\/liveme.cms.ksmobile.net\\\/live\\\/announcement\\\/2017-10-20_22:24:38\\\/4.png\",\"videoid\":\"15154610218328614178\",\"content\":\"FOLLOW ME PLEASE\",\"x_coordinate\":\"0.22\",\"y_coordinate\":\"0.23\"}",
          "announcement_shop": "",

如何从这个json中获取“请跟我来”的内容?

replay_data = raw_replay_data['data']['video_info'][0]
announcement = replay_data['announcement']

把所有东西都拿走 ['announcement'] 我做不到 ['announcement']['content'] .

正确的方法是什么?

提前谢谢你帮我弄明白。