ipython安装-IPython的安装及问题解决

IPython是python的一个第三方库，本来使用pip(类似于linux的yum)工具是很容易安装的，但是因为版本原因有时会出些问题，比如2.7.x版本的不能安装IPython的最新版本，会报错：

报错如下：

[root@iZ2ze7qh6q0di3qkvef1dzZ ~]# pip install ipython

Looking in indexes: http://mirrors.aliyun.com/pypi/simple/

Collecting ipython

Downloading http://mirrors.aliyun.com/pypi/packages/f3/c3/6c0af5b99d9551fa7b33c674d8f1232033678dcc817098e7a4ac8cd0baf1/ipython-7.1.1.tar.gz (5.1MB)

100% |████████████████████████████████| 5.1MB 97.5MB/s

Complete output from command python setup.py egg_info:

IPython 7.0+ supports Python 3.5 and above.

When using Python 2.7, please install IPython 5.x LTS Long Term Support version.

Python 3.3 and 3.4 were supported up to IPython 6.x.

See IPython `README.rst` file for more information:

https://github.com/ipython/ipython/blob/master/README.rst

Python sys.version_info(major=2, minor=7,