code: def get_tight_bbox(fig, bbox_extra_artists=[], pad=None):
      
      renderer = fig.canvas.get_renderer()
      bbox_inches = fig.get_tightbbox(renderer)
      bbox_artists = bbox_extra_artists[:]
      bbox_artists += fig.get_default_bbox_extra_artists()
      bbox_filtered = []
      for a in bbox_artists:
          bbox = a.get_window_extent(renderer)
          if isinstance(bbox, tuple):
              continue
          if a.get_clip_on():
              clip_box = a.get_clip_box()
              if clip_box is not None:
                  bbox = Bbox.intersection(bbox, clip_box)
              clip_path = a.get_clip_path()
              if clip_path is not None and bbox is not None:
                  clip_path = clip_path.get_fully_transformed_path()
                  bbox = Bbox.intersection(bbox,
                                           clip_path.get_extents())
          if bbox is not None and (bbox.width != 0 or
                                   bbox.height != 0):
              bbox_filtered.append(bbox)
      if bbox_filtered:
          _bbox = Bbox.union(bbox_filtered)
          trans = Affine2D().scale(1.0 / fig.dpi)
          bbox_extra = TransformedBbox(_bbox, trans)
          bbox_inches = Bbox.union([bbox_inches, bbox_extra])
      return bbox_inches.padded(pad) if pad else bbox_inches
docs: Compute a tight bounding box around all the artists in the figure.