形如 a的字符串最终转为list类型，转类型的时候各种报错，而且api接口各种数据不支持报错 "无效数据。期待为字典类型，得到的是 unicode 。"最终进行了如下转换才被接受
a="[{u'category': u'flow', u'name': u'\u91d1\u5c91\u4e81', u'value': 10.14, u'createtime': u'2019-05-21 00:00:00', u'type': u'40', u'id': 890220}]" b1=str(a).decode('utf-8').replace('\'','\"').decode('unicode-escape').replace('u\"','\"') print b1 print type(b1) c1= json.loads(b1) print c1 print type(c1) d1=json.dumps(c1) print d1 print type(d1)打印输出：
[{"category": "flow", "name": "金岑亁", "value": 10.14, "createtime": "2019-05-21 00:00:00", "type": "40", "id": 890220}] <type 'unicode'> [{u'category': u'flow', u'name': u'\u91d1\u5c91\u4e81', u'value': 10.14, u'createtime': u'2019-05-21 00:00:00', u'type': u'40', u'id': 890220}] <type 'list'> [{"category": "flow", "name": "\u91d1\u5c91\u4e81", "value": 10.14, "createtime": "2019-05-21 00:00:00", "type": "40", "id": 890220}] <type 'str'>
