解码自
string_escape:
>>> import json>>> value = "{\x22username\x22:\x229\x22,\x22password\x22:\x226\x22,\x22id\x22:\x222c8bfa56-f5d9\x22, \x22FName\x22:\x22AnkQcAJyrqpg\x22}">>> value.depre('string_escape')'{"username":"9","password":"6","id":"2c8bfa56-f5d9", "FName":"AnkQcAJyrqpg"}'>>> json.loads(value.depre('string_escape')){u'username': u'9', u'password': u'6', u'id': u'2c8bfa56-f5d9', u'FName': u'AnkQcAJyrqpg'}


