old_contents: import pandas as pd
  import plotly.figure_factory as ff
  from plotly.graph_objs.graph_objs import Figure
  from plotly.offline import plot
  from scipy.cluster.hierarchy import linkage
  from scipy.spatial.distance import pdist
  
  from lexos.models.base_model import BaseModel
  from lexos.models.matrix_model import MatrixModel
  from lexos.receivers.dendro_receiver import DendroOption, DendroReceiver
  
  
  class DendrogramModel(BaseModel):
      def __init__(self, test_dtm: pd.DataFrame = None,
                   test_dendro_option: DendroOption = None):
          """This is the class to generate dendrogram.
  
          :param test_dtm: (fake parameter)
                      the doc term matrix used of testing
          :param test_dendro_option: (fake parameter)
                      the dendrogram used for testing
          """
          super().__init__()
          matrix_model = MatrixModel()
          dendro_receiver = DendroReceiver()
  
          self._doc_term_matrix = test_dtm if test_dtm \
              else matrix_model.get_matrix()
  
          self._dendro_option = test_dendro_option if test_dendro_option else \
              dendro_receiver.options_from_front_end()
  
      def _get_dendrogram_fig(self) -> Figure:
          """Generate a dendrogram figure object in plotly.
  
          :return: A plotly figure object
          """
  
          return ff.create_dendrogram(
              self._doc_term_matrix,
              orientation=self._dendro_option.orientation,
  
              distfun=lambda matrix: pdist(
                  matrix, metric=self._dendro_option.dist_metric),
  
              linkagefun=lambda dist: linkage(
                  dist, method=self._dendro_option.dist_metric)
          )
  
      def get_dendrogram_div(self) -> str:
          """Generate the dendrogram div to send to the front end
  
          :return: a div
          """
  
          div = plot(self._get_dendrogram_fig(),
                     show_link=False, output_type="div", include_plotlyjs=False)
  
          return div
  
  
  
  
  
new_contents: import pandas as pd
  import plotly.figure_factory as ff
  from plotly.graph_objs.graph_objs import Figure
  from plotly.offline import plot
  from scipy.cluster.hierarchy import linkage
  from scipy.spatial.distance import pdist
  
  from lexos.models.base_model import BaseModel
  from lexos.models.matrix_model import MatrixModel
  from lexos.receivers.dendro_receiver import DendroOption, DendroReceiver
  
  
  class DendrogramModel(BaseModel):
      def __init__(self, test_dtm: pd.DataFrame = None,
                   test_dendro_option: DendroOption = None):
          """This is the class to generate dendrogram.
  
          :param test_dtm: (fake parameter)
                      the doc term matrix used of testing
          :param test_dendro_option: (fake parameter)
                      the dendrogram used for testing
          """
          super().__init__()
          matrix_model = MatrixModel()
          dendro_receiver = DendroReceiver()
  
          self._doc_term_matrix = test_dtm if test_dtm \
              else matrix_model.get_matrix()
  
          self._dendro_option = test_dendro_option if test_dendro_option else \
              dendro_receiver.options_from_front_end()
  
      def _get_dendrogram_fig(self) -> Figure:
          """Generate a dendrogram figure object in plotly.
  
          :return: A plotly figure object
          """
  
          return ff.create_dendrogram(
              self._doc_term_matrix,
              orientation=self._dendro_option.orientation,
  
              distfun=lambda matrix: pdist(
                  matrix, metric=self._dendro_option.dist_metric),
  
              linkagefun=lambda dist: linkage(
                  dist, method=self._dendro_option.dist_metric)
          )
  
      def get_dendrogram_div(self) -> str:
          """Generate the dendrogram div to send to the front end
  
          :return: a div
          """
  
          div = plot(self._get_dendrogram_fig(),
                     show_link=False, output_type="div", include_plotlyjs=False)
  
          return div
  
subject: remove overflow whitespace