安装IPython 0.12.1

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Ipython 是一个 python 的交互式 shell，比默认的python shell 好用得多，支持变量自动补全，自动缩进，支持 bash shell 命令，内置了许多很有用的功能和函数。

ipython的安装对python的版本是有要求的。
之前centos6.4的系统自带的python4，重装了python6后虽然ipython0.12.1可以安装，但运行spark的时候就出现问题了./bin/pyspark的时候就提示，ImportError:No module named zlib. 反反复复最后还是换了系统，装了centos7，自带python7的版本。这样重新安装ipyhon,就没那么多问题。

1.下载ipython

地址： http://ipython.org/download.html

2.解压：

`# tar zxvf ipython-0.11.tar.gz`

3.安装：

   #cd ipython-0.11   #python setup.py install

4.运行：

# ipython

Python 2.7.5 (default, Nov 20 2015, 01:24:18) Type "copyright", "credits" or "license" for more information.IPython 0.12.1 -- An enhanced Interactive Python.?         -> Introduction and overview of IPython's features.%quickref -> Quick reference.help      -> Python's own help system.object?   -> Details about 'object', use 'object??' for extra details.In [1]:

这时系统ipython已安装成功，接下来在spark中使用ipython

5.启动spark集群

6.在原来./bin/pyspark命令基础上添加配置

PYSPARK_DRIVER_PYTHON=ipython ./bin/pyspark

[root@localhost spark]# PYSPARK_DRIVER_PYTHON=ipython ./bin/pysparkPython 2.7.5 (default, Nov 20 2015, 01:24:18) Type "copyright", "credits" or "license" for more information.IPython 0.12.1 -- An enhanced Interactive Python.?         -> Introduction and overview of IPython's features.%quickref -> Quick reference.help      -> Python's own help system.object?   -> Details about 'object', use 'object??' for extra details.In [1]: exit()

输出显示“IPython 0.12.1 – An enhanced Interactive Python”.表示调用ipython成功

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