Hi,<br><br>I am trying the example code for drawing the graphs on my machine. Here is the error I am getting. I am sure this is something to do with the installed packages. I am using Debian and am not sure what package or path is missing.<br>
<br>******<br><br>Traceback (most recent call last):<br>  File &quot;gt_draw_graph.py&quot;, line 23, in &lt;module&gt;<br>    penwidth=ebet, overlap=&quot;prism&quot;, output=&quot;graph-draw.png&quot;)<br>  File &quot;/usr/local/lib/python2.5/site-packages/graph_tool/draw/__init__.py&quot;, line 264, in graph_draw<br>
    gvg = gv.graph(&quot;G&quot;)<br>NameError: global name &#39;gv&#39; is not defined<br><br>******<br clear="all"><br>TIA, <br>Karthik<br>