github： https://github.com/python-zk/kazoo
文档： https://kazoo.readthedocs.io/en/latest/
安装
$ pip install kazoo
1、CURD代码示例
>>> from kazoo.client import KazooClient
>>> zk = KazooClient(hosts='127.0.0.1:2181')
# zkCli.sh
>>> zk.start()
# ls /
>>> zk.get_children("/")
['zookeeper']
# create /mydata data
>>> zk.create("/mydata", "data".encode())
'/mydata'
# get /mydata
>>> zk.get("/mydata")
(b'data',
ZnodeStat(czxid=40, mzxid=40, ctime=1560494490063, mtime=1560494490063, version=0, cversion=0,
aversion=0, ephemeralOwner=0, dataLength=4, numChildren=0, pzxid=40))
# set /mydata data2
>>> zk.set("/mydata", "data2".encode())
ZnodeStat(czxid=40, mzxid=41, ctime=1560494490063, mtime=1560494514269, version=1, cversion=0,
aversion=0, ephemeralOwner=0, dataLength=5, numChildren=0, pzxid=40)
# delete /mydata
>>> zk.delete("/mydata")
True
#
>>> zk.exists("/mydata")
# quit
>>> zk.stop()
2、监视Zookeeper节点数据发生变化
（1）Python代码
# -- coding: utf-8 --
import time
from kazoo.client import KazooClient
zk = KazooClient(hosts='127.0.0.1:2181')
# 启动
zk.start()
@zk.DataWatch("/mydata")
def watch_children(data, stat):
print("Data is %s" % data)
if data:
print("Version is %s" % stat.version)
while True:
time.sleep(10)
（2）从Zookeeper客户端修改数据
$ zkCli.sh
> create /mydata data0
Created /mydata
> set /mydata data1
> set /mydata data2
（3）监听到的数据变化
Data is None
Data is b'data0'
Version is 0
Data is b'data1'
Version is 1
Data is b'data2'
Version is 2
参考：
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