Importing theano: AttributeError: 'module' object has no attribute 'find_graphviz'
<p>When I run <code>import theano</code> in Python, I get the following error message:</p>

<pre><code>Python 2.7.6 (default, Jun 22 2015, 17:58:13)
[GCC 4.8.2] on linux2
Type "help", "copyright", "credits" or "license" for more information.
&gt;&gt;&gt; import theano
Traceback (most recent call last):
  File "&lt;stdin&gt;", line 1, in &lt;module&gt;
  File "/usr/local/lib/python2.7/dist-packages/theano/__init__.py", line 74, in &lt;module&gt;
    from theano.printing import pprint, pp
  File "/usr/local/lib/python2.7/dist-packages/theano/printing.py", line 35, in &lt;module&gt;
    if pd.find_graphviz():
AttributeError: 'module' object has no attribute 'find_graphviz'
</code></pre>

<p>What could be the issue, and how to fix it?</p>

<p>I use Theano 0.8.2 on Ubuntu 14.04.4 LTS x64 with Python 2.7.6 x64.</p>

<hr>

<p>I unsuccessfully tried:</p>

<ul>
<li><code>sudo apt-get install -y graphviz libgraphviz-dev</code></li>
</ul>