docstr: Sets the marker opacity. Note that the marker opacity for
  scatter3d traces must be a scalar value for performance
  reasons. To set a blending opacity value (i.e. which is not
  transparent), set "marker.color" to an rgba color and use its
  alpha channel.
  
  The 'opacity' property is a number and may be specified as:
    - An int or float in the interval [0, 1]
  
  Returns
  -------
  int|float
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code: def opacity(self):
      """
      Sets the marker opacity. Note that the marker opacity for
      scatter3d traces must be a scalar value for performance
      reasons. To set a blending opacity value (i.e. which is not
      transparent), set "marker.color" to an rgba color and use its
      alpha channel.
  
      The 'opacity' property is a number and may be specified as:
        - An int or float in the interval [0, 1]
  
      Returns
      -------
      int|float
      """
      return self["opacity"]
  
imports: from plotly.basedatatypes import BaseTraceHierarchyType
  import copy
label_desc: Use image node_id 23 for calling the Marker obj's underlying member method code with example usage: obj.opacity() and returns: self