code: def rug(x, label=None, opacity=None):
      
      x = _try_pydatetime(x)
      x = np.atleast_1d(x)
      data = [
          go.Scatter(
              x=x,
              y=np.ones_like(x),
              name=label,
              opacity=opacity,
              mode='markers',
              marker=dict(symbol='line-ns-open'),
          )
      ]
      layout = dict(
          barmode='overlay',
          hovermode='closest',
          legend=dict(traceorder='reversed'),
          xaxis1=dict(zeroline=False),
          yaxis1=dict(
              domain=[0.85, 1],
              showline=False,
              showgrid=False,
              zeroline=False,
              anchor='free',
              position=0.0,
              showticklabels=False,
          ),
      )
      return Chart(data=data, layout=layout)
docs: Rug chart.
  
      Parameters
      ----------
      x : array-like, optional
      label : TODO, optional
      opacity : TODO, optional
  
      Returns
      -------
      Chart