How to use mplhep - 1 common examples

_error = None
        else:
            _error = w2err(plot_info['sumw'], plot_info['sumw2'])
        if fill_opts is not None:
            histtype = 'fill'
            kwargs = fill_opts
        elif error_opts is not None and line_opts is None:
            histtype = 'errorbar'
            kwargs = error_opts
        else:
            histtype = 'step'
            kwargs = line_opts
        if kwargs is None:
            kwargs = {}

        hep.histplot(plot_info['sumw'], edges, label=plot_info['label'],
                     yerr=_error, histtype=histtype, ax=ax,
                     density=density, binwnorm=binwnorm, stack=stack,
                     **kwargs)

        if stack and error_opts is not None:
            stack_sumw = np.sum(plot_info['sumw'], axis=0)
            stack_sumw2 = np.sum(plot_info['sumw2'], axis=0)
            err = poisson_interval(stack_sumw, stack_sumw2)
            opts = {'step': 'post', 'label': 'Sum unc.', 'hatch': '///',
                    'facecolor': 'none', 'edgecolor': (0, 0, 0, .5), 'linewidth': 0}
            opts.update(error_opts)
            ax.fill_between(x=edges, y1=np.r_[err[0, :], err[0, -1]],
                            y2=np.r_[err[1, :], err[1, -1]], **opts)

        if legend_opts is not None:
            _label = overlay.label if overlay is not None else ""