删除json中的双引号

Question

我正在尝试计算文本和图像之间的余弦相似度，并且我有两个这样的json文件

[ {
  "text" : [ -0.1414141058921814, 0.033384405076503754, 0.03852704539895058],
  "id" : "pseudo_label_1"
}]

和

[ {
  "_img" : "[[-0.0331673,-0.138877,-0.0187086,0.065926]]",
  "key" : "image_1.jpg"
}]

如何从值中删除双引号和方括号

"_img" : "[[-0.0331673,-0.138877,-0.0187086,0.065926]]"

获得这样的价值？

"_img" : [-0.0331673,-0.138877,-0.0187086,0.065926]