plotting.py 文件源码

def _add_legend_handle(self, handle, label, index=None):
        from matplotlib.patches import Rectangle
        # Because fill_between isn't supported in legend,
        # specifically add Rectangle handle here
        alpha = self.kwds.get('alpha', None)
        handle = Rectangle((0, 0), 1, 1, fc=handle.get_color(), alpha=alpha)
        LinePlot._add_legend_handle(self, handle, label, index=index)