Very very rough sketch of part of the logo. Low solution for marking files drawn with <a href="https://en.wikipedia.org/wiki/Matplotlib" class="extiw" title="w:Matplotlib">Matplotlib</a>.
Matplotlib
2015-02-18
<i>non free media</i> en:<span style="border:1px dotted #FC0;padding:0 4px"><a href="https://en.wikipedia.org/wiki/File:Matplotlib_logo.svg" class="extiw" title="en:File:Matplotlib logo.svg">Matplotlib logo.svg</a></span>