如何在 Python 中合并两个 json 字符串

我最近开始使用Python，我正在try 将我的一个JSON字符串与现有的JSON字符串连接起来.我也在使用ZooKeeper，所以在使用Python kazoo库时，我从ZooKeeper node 获取现有的json字符串.

# gets the data from zookeeper
data, stat = zk.get(some_znode_path)
jsonStringA = data.decode("utf-8")

如果我印jsonStringA张，结果是这样的-

{"error_1395946244342":"valueA","error_1395952003":"valueB"}

But if I do print json.loads(jsonString) then it prints out like this -

{u'error_1395946244342': u'valueA', u'error_1395952003': u'valueB'}

Here jsonStringA will have my existing JSON String. Now I have another key-value pair which I need to add in the exiting jsonStringA -

下面是我的Python代码-

# gets the data from zookeeper
data, stat = zk.get(some_znode_path)
jsonStringA = data.decode("utf-8")

timestamp_in_ms = "error_"+str(int(round(time.time() * 1000)))
node = "/pp/tf/test/v1"
a,b,c,d = node.split("/")[1:]
host_info = "h1"
local_dc = "dc3"
step = "step2"

从zookeeper中提取后，我现有的jsonStringA个将是这样-

{"error_1395946244342":"valueA","error_1395952003":"valueB"}

Now I need to append this key-value pair in the jsonStringA -

"timestamp_in_ms":"Error Occured on machine "+host_info+" in datacenter "+ local_dc +" on the "+ step +" of process "+ c +"

So in short I need to merge below key-value pair -

"error_1395952167":"Error Occured on machine h1 in datacenter dc3 on the step2 of process test"

最后的JSON字符串如下所示-

{"error_1395946244342":"valueA","error_1395952003":"valueB","error_1395952167":"Error Occured on machine h1 in datacenter dc3 on the step2 of process test"}

这有可能做到吗？