安装ipython遇到问题_尝试通过终端安装ipython时出现问题

我想通过macOS终端安装ipython(我已经尝试了easy_install和{})，但是总是会出现一个特定的问题，这在最后一行中描述：Searching for ipython

Reading https://pypi.python.org/simple/ipython/

Best match: ipython 5.1.0

Downloading https://pypi.python.org/packages/d4/0b/70c913ed4c99eb84c589e5e25b28985ba93ca2a57e08959bb14372f7f5f8/ipython-5.1.0.zip#md5=9d6a0bd4d4c18a4dc88d2f69dfefdea7

Processing ipython-5.1.0.zip

Writing /tmp/easy_install-f_u6YT/ipython-5.1.0/setup.cfg

Running ipython-5.1.0/setup.py -q bdist_egg --dist-dir /tmp/easy_install-f_u6YT/ipython-5.1.0/egg-dist-tmp-3mwkoQ

checking package data

check version number

creating /Library/Python/2.7/site-packages/ipython-5.1.0-py2.7.egg

Extracting ipython-5.1.0-py2.7.egg to /Library/Python/2.7/site-packages

Adding ipython 5.1.0 to easy-install.pth file

Installing ipython script to /usr/local/bin

Installing iptest2 script to /usr/local/bin

Installing iptest script to /usr/local/bin

Installing ipython2 script to /usr/local/bin

Installed /Library/Python/2.7/site-packages/ipython-5.1.0-py2.7.egg

Processing dependencies for ipython

error: six 1.4.1 is installed but six>=1.9.0 is required by set(['prompt-toolkit'])

我能做些什么来解决它？在

编辑：我尝试了sudo pip install --upgrade six，但是发生了一个权限错误。在

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