Plotly python how to draw unbounded lines and spans?
<p>I am using plotly (the offline version) within an IPython notebook and I like it a lot. However I couldn't find a way to plot a vertical line or a vertical band.</p>

<p>The equivalents in matplotlib are:</p>

<pre><code>import matplotlib.plyplot as plt
plt.axvline(x=0)
plt.axvspan(xmin=0, xmax=1)
</code></pre>

<p>thanks in advance</p>