docstr: Construct a new Marker object
  
  Parameters
  ----------
  arg
      dict of properties compatible with this constructor or
      an instance of
      :class:`plotly.graph_objs.scattersmith.selected.Marker`
  color
      Sets the marker color of selected points.
  opacity
      Sets the marker opacity of selected points.
  size
      Sets the marker size of selected points.
  
  Returns
  -------
  Marker
code: def __init__(
      self, arg=None, color=None, opacity=None, size=None, **kwargs
  ):
      """
      Construct a new Marker object
  
      Parameters
      ----------
      arg
          dict of properties compatible with this constructor or
          an instance of
          :class:`plotly.graph_objs.scattersmith.selected.Marker`
      color
          Sets the marker color of selected points.
      opacity
          Sets the marker opacity of selected points.
      size
          Sets the marker size of selected points.
  
      Returns
      -------
      Marker
      """
      super(Marker, self).__init__("marker")
  
      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.scattersmith.selected.Marker
  constructor must be a dict or
  an instance of :class:`plotly.graph_objs.scattersmith.selected.Marker`"""
          )
  
      # 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("color", None)
      _v = color if color is not None else _v
      if _v is not None:
          self["color"] = _v
      _v = arg.pop("opacity", None)
      _v = opacity if opacity is not None else _v
      if _v is not None:
          self["opacity"] = _v
      _v = arg.pop("size", None)
      _v = size if size is not None else _v
      if _v is not None:
          self["size"] = _v
  
      # Process unknown kwargs
      # ----------------------
      self._process_kwargs(**dict(arg, **kwargs))
  
      # Reset skip_invalid
      # ------------------
      self._skip_invalid = False
  
file_path: plotly.py/packages/python/plotly/plotly/graph_objs/scattersmith/selected/_marker.py
imports: from plotly.basedatatypes import BaseTraceHierarchyType
  import copy
label_desc: Use image node_id 8 to create a new Marker object from inherited base classes: _BaseTraceHierarchyType with example: obj = Marker(arg, color, opacity, size)