text: import _plotly_utils.basevalidators
  
  
  class OpacityValidator(_plotly_utils.basevalidators.NumberValidator):
  
      def __init__(
          self, plotly_name='opacity', parent_name='histogram.marker', **kwargs
      ):
          super(OpacityValidator, self).__init__(
              plotly_name=plotly_name,
              parent_name=parent_name,
              array_ok=True,
              edit_type='style',
              max=1,
              min=0,
              role='style',
              **kwargs
          )
  