title: matplotlib share x axis but don't show x axis tick labels for both, just one
body: <p>I'm using python + matplotlib and I'm having two plots share an axis. If you try to set <code>graph1.set_xticklabels([])</code> while sharing an axis, it has no effect because it is shared. Is there a way to share the axis AND be able to hide the x axis of one plot?</p>