docstr: Construct a new Hoverlabel object
  
  Parameters
  ----------
  arg
      dict of properties compatible with this constructor or
      an instance of
      :class:`plotly.graph_objs.layout.annotation.Hoverlabel`
  bgcolor
      Sets the background color of the hover label. By
      default uses the annotation's `bgcolor` made opaque, or
      white if it was transparent.
  bordercolor
      Sets the border color of the hover label. By default
      uses either dark grey or white, for maximum contrast
      with `hoverlabel.bgcolor`.
  font
      Sets the hover label text font. By default uses the
      global hover font and size, with color from
      `hoverlabel.bordercolor`.
  
  Returns
  -------
  Hoverlabel
code: def __init__(
      self,
      arg=None,
      bgcolor=None,
      bordercolor=None,
      font=None,
      **kwargs,
  ):
      """
      Construct a new Hoverlabel object
  
      Parameters
      ----------
      arg
          dict of properties compatible with this constructor or
          an instance of
          :class:`plotly.graph_objs.layout.annotation.Hoverlabel`
      bgcolor
          Sets the background color of the hover label. By
          default uses the annotation's `bgcolor` made opaque, or
          white if it was transparent.
      bordercolor
          Sets the border color of the hover label. By default
          uses either dark grey or white, for maximum contrast
          with `hoverlabel.bgcolor`.
      font
          Sets the hover label text font. By default uses the
          global hover font and size, with color from
          `hoverlabel.bordercolor`.
  
      Returns
      -------
      Hoverlabel
      """
      super(Hoverlabel, self).__init__("hoverlabel")
  
      if "_parent" in kwargs:
          self._parent = kwargs["_parent"]
          return
  
      # Validate arg
      # ------------
      if arg is None:
          arg = {}
      elif isinstance(arg, self.__class__):
          arg = arg.to_plotly_json()
      elif isinstance(arg, dict):
          arg = _copy.copy(arg)
      else:
          raise ValueError(
              """\
  The first argument to the plotly.graph_objs.layout.annotation.Hoverlabel
  constructor must be a dict or
  an instance of :class:`plotly.graph_objs.layout.annotation.Hoverlabel`"""
          )
  
      # Handle skip_invalid
      # -------------------
      self._skip_invalid = kwargs.pop("skip_invalid", False)
      self._validate = kwargs.pop("_validate", True)
  
      # Populate data dict with properties
      # ----------------------------------
      _v = arg.pop("bgcolor", None)
      _v = bgcolor if bgcolor is not None else _v
      if _v is not None:
          self["bgcolor"] = _v
      _v = arg.pop("bordercolor", None)
      _v = bordercolor if bordercolor is not None else _v
      if _v is not None:
          self["bordercolor"] = _v
      _v = arg.pop("font", None)
      _v = font if font is not None else _v
      if _v is not None:
          self["font"] = _v
  
      # Process unknown kwargs
      # ----------------------
      self._process_kwargs(**dict(arg, **kwargs))
  
      # Reset skip_invalid
      # ------------------
      self._skip_invalid = False
  
file_path: catboost/contrib/python/plotly/py3/plotly/graph_objs/layout/annotation/_hoverlabel.py
imports: from plotly.basedatatypes import BaseLayoutHierarchyType
  import copy
label_desc: Use image node_id 8 to create a new Hoverlabel object from inherited base classes: _BaseLayoutHierarchyType with example: obj = Hoverlabel(arg, bgcolor, bordercolor, font)