code: def __init__(self, **metadata):
      traits = [
          traitlets.Int(traitlets.Undefined, min=0, max=255),
          traitlets.Int(traitlets.Undefined, min=0, max=255),
          traitlets.Int(traitlets.Undefined, min=0, max=255),
      ]
      super(RgbTuple, self).__init__(*traits, **metadata)
  
imports: import re
  import traitlets
  from .locations import locations_to_list
label_desc: Use image node_id 1 to create a new RgbTuple object from inherited base classes: traitlets with example: obj = RgbTuple()