怎么使用python提取json文件中的字段？

问题描述

现在有一个json数据，如下：

{ 'favourite':{

'bkmrk':{ 'id1490843709594066':{'guid':'904eff52277f403b89f6410fe2758646.11','lcate':'1' }, 'id1490843712805183':{'guid':'58457f60eca64025bc43a978f9c98345.16','lcate':'2' }, 'id149084371467327':{'guid':'a0f907f9dc8b40f689b083f3eba7228b.16','lcate':'3' }, 'id1490843716295393':{'guid':'eb75d929455e468bb712e7bc2025d11a.16','lcate':'4' } }

}}我该如何使用python操作该json，才能得到以下形式的内容：'guid':'904eff52277f403b89f6410fe2758646.11''guid':'58457f60eca64025bc43a978f9c98345.16''guid':'a0f907f9dc8b40f689b083f3eba7228b.16''guid':'eb75d929455e468bb712e7bc2025d11a.16'

问题解答

import jsonwith open(’json.txt’, ’r’) as fp: data = json.load(fp) print(data)

data就是你要的。

import jsona = ’’’{ 'favourite':{ 'bkmrk':{ 'id1490843709594066':{'guid':'904eff52277f403b89f6410fe2758646.11','lcate':'1' }, 'id1490843712805183':{'guid':'58457f60eca64025bc43a978f9c98345.16','lcate':'2' }, 'id149084371467327':{'guid':'a0f907f9dc8b40f689b083f3eba7228b.16','lcate':'3' }, 'id1490843716295393':{'guid':'eb75d929455e468bb712e7bc2025d11a.16','lcate':'4' } }}}’’’result = [{’guidi’: i[1][’guid’]} for i in json.loads(a)[’favourite’][’bkmrk’].iteritems()]print result # 输出结果:[{’guidi’: u’904eff52277f403b89f6410fe2758646.11’}, {’guidi’: u’a0f907f9dc8b40f689b083f3eba7228b.16’}, {’guidi’: u’eb75d929455e468bb712e7bc2025d11a.16’}, {’guidi’: u’58457f60eca64025bc43a978f9c98345.16’}]