old_contents: """
  Utility functions to access the entry points registry
  """
  
  # Standard library modules.
  from operator import attrgetter
  
  # Third party modules.
  import pkg_resources
  
  # Local modules.
  
  # Globals and constants variables.
  
  def iter_entry_points(group, name=None):
      entry_points = list(pkg_resources.iter_entry_points(group, name)) #@UndefinedVariable
      entry_points.sort(key=attrgetter('name'))
  
      for entry_point in entry_points:
          yield entry_point.name, entry_point.load(require=False)
  
  def iter_condition_widget_classes(name=None):
      return iter_entry_points('pyhmsa_gui.spec.condition', name)
  
  def iter_condition_widgets(name=None, *args, **kwargs):
      for name, clasz in iter_condition_widget_classes(name):
          yield name, clasz(*args, **kwargs)
  
  def iter_datum_widget_classes(name=None):
      return iter_entry_points('pyhmsa_gui.spec.datum', name)
  
  def iter_datum_widgets(name=None, *args, **kwargs):
      for name, clasz in iter_datum_widget_classes(name):
          yield name, clasz(*args, **kwargs)
  
  def iter_importer_classes(name=None):
      for name, clasz in iter_entry_points('pyhmsa.fileformat.importer', name):
          for ext in clasz.SUPPORTED_EXTENSIONS:
              yield name, ext, clasz
  
  def iter_importers(name=None, *args, **kwargs):
      for name, ext, clasz in iter_importer_classes(name):
          yield name, ext, clasz(*args, **kwargs)
  
  def iter_exporter_classes(name=None):
      return iter_entry_points('pyhmsa.fileformat.exporter', name)
  
  def iter_exporters(name=None, *args, **kwargs):
      for name, clasz in iter_exporter_classes(name):
          yield name, clasz(*args, **kwargs)
  
  def iter_preferences_widget_classes(name=None):
      return iter_entry_points('pyhmsa.viewer.preferences', name)
new_contents: """
  Utility functions to access the entry points registry
  """
  
  # Standard library modules.
  from operator import attrgetter
  
  # Third party modules.
  import pkg_resources
  
  # Local modules.
  
  # Globals and constants variables.
  
  def iter_entry_points(group, name=None):
      entry_points = list(pkg_resources.iter_entry_points(group, name)) #@UndefinedVariable
      entry_points.sort(key=attrgetter('name'))
  
      for entry_point in entry_points:
          yield entry_point.name, entry_point.load(require=False)
  
  def iter_condition_widget_classes(name=None):
      return iter_entry_points('pyhmsa_gui.spec.condition', name)
  
  def iter_condition_widgets(name=None, *args, **kwargs):
      for name, clasz in iter_condition_widget_classes(name):
          yield name, clasz(*args, **kwargs)
  
  def iter_datum_widget_classes(name=None):
      return iter_entry_points('pyhmsa_gui.spec.datum', name)
  
  def iter_datum_widgets(name=None, *args, **kwargs):
      for name, clasz in iter_datum_widget_classes(name):
          yield name, clasz(*args, **kwargs)
  
  def iter_importer_classes(name=None):
      for name, clasz in iter_entry_points('pyhmsa.fileformat.importer', name):
          for ext in clasz.SUPPORTED_EXTENSIONS:
              yield name, ext, clasz
  
  def iter_importers(name=None, *args, **kwargs):
      for name, ext, clasz in iter_importer_classes(name):
          yield name, ext, clasz(*args, **kwargs)
  
  def iter_exporter_classes(name=None):
      return iter_entry_points('pyhmsa.fileformat.exporter', name)
  
  def iter_exporters(name=None, *args, **kwargs):
      for name, clasz in iter_exporter_classes(name):
          yield name, clasz(*args, **kwargs)
  
  def iter_preferences_widget_classes(name=None):
      return iter_entry_points('pyhmsa_viewer.preferences', name)
subject: Fix entry points