docstr: Sets the projection color.
  
  The 'opacity' property is a number and may be specified as:
    - An int or float in the interval [0, 1]
  
  Returns
  -------
  int|float
code: def opacity(self):
      """
      Sets the projection color.
  
      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"]
  
file_path: catboost/contrib/python/plotly/py3/plotly/graph_objs/scatter3d/projection/_z.py
imports: from plotly.basedatatypes import BaseTraceHierarchyType
  import copy
label_desc: Use image node_id 1 for calling the Z obj's underlying member method code with example usage: obj.opacity() and returns: self