title: ImportError: cannot import name start_ipython
body: <p>I have extracted ipython-1.1.0.tar.gz in /usr/lib/ipython-1.1.0 and have run the following commands to finish the build and installation:</p>
  
  <pre><code>root@my-laptop:/usr/lib/ipython-1.1.0# python setup.py build
  root@my-laptop:/usr/lib/ipython-1.1.0# python setup.py install
  </code></pre>
  
  <p>I am using Python 2.6 and is installed under /usr/bin/python2.6 and have my additional packages under /usr/lib/python2.6/site-packages/</p>
  
  <p>Now, when I am trying to start ipython notebook from shell command, I am getting the following ImportError message:</p>
  
  <pre><code>root@my-laptop:/usr/lib/ipython-1.1.0# ipython notebook
  Traceback (most recent call last):
   File "/usr/local/bin/ipython", line 5, in &lt;module&gt;
    from IPython import start_ipython
  ImportError: cannot import name start_ipython
  </code></pre>
  
  <p>When I tried to start the IPython instance as mentioned in README.rst file, I got the following message:</p>
  
  <pre><code>root@my-laptop:/usr/lib/ipython-1.1.0# python -m IPython
  /usr/bin/python: IPython is a package and cannot be directly executed
  </code></pre>
  
  <p>I tried easy_install and pip install </p>
  
  <pre><code>root@my-laptop:/usr/lib/ipython-1.1.0# easy_install ipython
  Searching for ipython
  Best match: ipython 1.1.0
  Adding ipython 1.1.0 to easy-install.pth file
  
  Using /usr/local/lib/python2.6/dist-packages
  Processing dependencies for ipython
  root@my-laptop:/usr/lib/ipython-1.1.0# pip install ipython
  Requirement already satisfied: ipython in /usr/lib/pymodules/python2.6
  Installing collected packages: ipython
  Successfully installed ipython
  </code></pre>
  
  <p>But the ImportError problem still remains unresolved. This is not allowing to open the interactive Python. </p>
  
  <p>I found some solution in the below link, but not sure about it:</p>
  
  <pre><code>https://trac.macports.org/ticket/40119
  </code></pre>