python - 如何使用 Python kazoo 库？

Question

我打算为 Zookeeper 使用 Python kazoo 库。这完全是关于 Python 的问题，而不是 zookeeper 我想这意味着如何正确使用 Python kazoo..

我对 python 完全陌生，所以我不知道如何开始以及如何使用 kazoo 连接 zookeeper。

这是我正在阅读的文档，以开始将 kazoo 用于 Zookeeper。

http://kazoo.readthedocs.org/en/latest/install.html

在那个 wiki 中，他们要求安装 kazoo。他们为此使用了一些 pip 命令？

pip 在这里做什么？我目前正在使用 Windows，所以我安装了 cygwin 和 python。我正在使用 Python 2.7.3

host@D-SJC-00542612 ~
$ python
Python 2.7.3 (default, Dec 18 2012, 13:50:09)
[GCC 4.5.3] on cygwin

现在我所做的是 - 我从上面的网站完全复制了这个命令 - pip install kazoo 并在我的 cygwin 命令提示符下运行它。

host@D-SJC-00542612 ~
$ pip install kazoo
Downloading/unpacking kazoo
  Running setup.py egg_info for package kazoo

    warning: no previously-included files found matching '.gitignore'
    warning: no previously-included files found matching '.travis.yml'
    warning: no previously-included files found matching 'Makefile'
    warning: no previously-included files found matching 'run_failure.py'
    warning: no previously-included files matching '*' found under directory 'sw'
    warning: no previously-included files matching '*pyc' found anywhere in distribution
    warning: no previously-included files matching '*pyo' found anywhere in distribution
Downloading/unpacking zope.interface>=3.8.0 (from kazoo)
  Running setup.py egg_info for package zope.interface

    warning: no previously-included files matching '*.dll' found anywhere in distribution
    warning: no previously-included files matching '*.pyc' found anywhere in distribution
    warning: no previously-included files matching '*.pyo' found anywhere in distribution
    warning: no previously-included files matching '*.so' found anywhere in distribution
Requirement already satisfied (use --upgrade to upgrade): distribute in c:\python27\lib\site-packages (from zope.interface>=3.8.0->kazoo)
Installing collected packages: kazoo, zope.interface
  Running setup.py install for kazoo

    warning: no previously-included files found matching '.gitignore'
    warning: no previously-included files found matching '.travis.yml'
    warning: no previously-included files found matching 'Makefile'
    warning: no previously-included files found matching 'run_failure.py'
    warning: no previously-included files matching '*' found under directory 'sw'
    warning: no previously-included files matching '*pyc' found anywhere in distribution
    warning: no previously-included files matching '*pyo' found anywhere in distribution
  Running setup.py install for zope.interface

    warning: no previously-included files matching '*.dll' found anywhere in distribution
    warning: no previously-included files matching '*.pyc' found anywhere in distribution
    warning: no previously-included files matching '*.pyo' found anywhere in distribution
    warning: no previously-included files matching '*.so' found anywhere in distribution
    building 'zope.interface._zope_interface_coptimizations' extension
    ********************************************************************************
    WARNING:

            An optional code optimization (C extension) could not be compiled.

            Optimizations for this package will not be available!
    ()
    Unable to find vcvarsall.bat
    ********************************************************************************
    Skipping installation of C:\Python27\Lib\site-packages\zope\__init__.py (namespace package)
    Installing C:\Python27\Lib\site-packages\zope.interface-4.0.5-py2.7-nspkg.pth
Successfully installed kazoo zope.interface
Cleaning up...

是否安装正确？现在我可以开始用 python 编写代码来连接 zookeeper 了吗？

很抱歉问了所有这些愚蠢的问题，因为我没有任何 python 背景，所以在这里学习一点......

我猜这里全是关于 Python 的问题，而不是 zookeeper..

Answer 1

pip 是安装包的常用方法。它从 pypi 查询并下载包.Kazoo 已根据日志语句安装。试试看。

你应该能够在 where python is installed\lib\site-packages\kazoo 找到这个包。

您应该尝试无错误地加载(导入)包:

from kazoo.client import KazooClient

启动动物园管理员之后。您的 zookeeper 配置将包含客户端端口详细信息。

tickTime=2000
dataDir=...../zookeeperdata/cluster/server1/data
clientPort=2181
initLimit=5

使用它来连接到 zookeeper。

# Create a client and start it
zk = KazooClient(hosts='127.0.0.1:2181')
zk.start()

# Now you can do the regular zookepper API calls
# Ensure some paths are created required by your application
zk.ensure_path("/app/someservice") 

# In the end, stop it
zk.stop()