Python 2.7 我不能让ipython跑

我使用pip安装了ipynotebook，每次尝试使用终端（ubuntu 14.04）启动ipython笔记本时都会出现此错误

回溯（最近一次呼叫最后一次）： 文件“/usr/local/bin/ipython”，第7行，在 从IPython导入开始\u IPython 文件“/usr/local/lib/python2.7/dist packages/IPython/_init__.py”，第47行，在 from.core.application导入应用程序 文件“/usr/local/lib/python2.7/dist-packages/IPython/core/application.py”，第22行，在 从traitlets.config.application导入应用程序，捕获配置错误 文件“/usr/local/lib/python2.7/dist-packages/traitlets/config/_-init__;.py”，第6行，在 从.应用程序导入* 文件“/usr/local/lib/python2.7/dist-packages/traitlets/config/application.py”，第17行，在 从decorator导入decorator ImportError:没有名为decorator的模块

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我该怎么办？

您是否尝试过

pip安装decorator

？您是否尝试过

pip安装decorator

？

siddharth@siddharth-HP-Pavilion-g6-Notebook-PC:~$ ipython notebook

Traceback (most recent call last): File "/usr/local/bin/ipython", line 7, in <module> from IPython import start_ipython File "/usr/local/lib/python2.7/dist-packages/IPython/__init__.py", line 47, in <module> from .core.application import Application File "/usr/local/lib/python2.7/dist-packages/IPython/core/application.py", line 22, in <module> from traitlets.config.application import Application, catch_config_error File "/usr/local/lib/python2.7/dist-packages/traitlets/config/__init__.py", line 6, in <module> from .application import * File "/usr/local/lib/python2.7/dist-packages/traitlets/config/application.py", line 17, in <module> from decorator import decorator ImportError: No module named decorator