话不多说，先上代码：
#原data.json文件: { 'shortdisc':"hello,json", 'image':"localhost:8080/usr/images/image.jpg" } #追加key至data.json文件： embed = {'id':1,'url':"www.baidu.com"} fr = open('usr/local/folder/data.json') model = json.load(fr) fr.close for i in embed[i]: model[i] = embed[i] jsObj = json.dumps(model) with open('usr/local/folder/data.json',"w") as fw: fw.write(jsObj) fw.close() #运行后data.json： { 'shortdisc':"hello,json", 'image':"localhost:8080/usr/images/image.jpg"， 'id':1, 'url':"www.baidu.com" }