old_contents: # -*- coding: utf-8 -*-
  
  ###############################################################################
  # This source file is part of the Tomviz project, https://tomviz.org/.
  # It is released under the 3-Clause BSD License, see "LICENSE".
  ###############################################################################
  import inspect
  import pkgutil
  
  import tomviz.io
  import tomviz.io.formats
  
  
  def list_python_readers():
  
      readers = []
      for importer, name, _ in pkgutil.iter_modules(tomviz.io.formats.__path__, prefix='tomviz.io.formats.'):
          m = importer.find_spec(name).loader.load_module()
          for _, c in inspect.getmembers(m, inspect.isclass):
              if inspect.getmodule(c) is m:
                  if issubclass(c, tomviz.io.Reader):
                      readers.append(
                          [
                              c.file_type().display_name,
                              c.file_type().extensions,
                              c
                          ]
                      )
      return readers
  
  
  def create_reader_instance(reader_class):
      return reader_class()
  
  
  def execute_reader(obj, path):
      return obj.read(path)
  
  
  def list_python_writers():
      writers = []
      for importer, name, _ in pkgutil.iter_modules(tomviz.io.formats.__path__, prefix='tomviz.io.formats.'):
          m = importer.find_spec(name).loader.load_module()
          for _, c in inspect.getmembers(m, inspect.isclass):
              if inspect.getmodule(c) is m:
                  if issubclass(c, tomviz.io.Writer):
                      writers.append(
                          [
                              c.file_type().display_name,
                              c.file_type().extensions,
                              c
                          ]
                      )
      return writers
  
  
  def create_writer_instance(writer_class):
      return writer_class()
  
  
  def execute_writer(obj, path, data):
      obj.write(path, data)
  
new_contents: # -*- coding: utf-8 -*-
  
  ###############################################################################
  # This source file is part of the Tomviz project, https://tomviz.org/.
  # It is released under the 3-Clause BSD License, see "LICENSE".
  ###############################################################################
  import inspect
  import pkgutil
  
  import tomviz.io
  import tomviz.io.formats
  
  
  def list_python_readers():
  
      readers = []
      for importer, name, _ in pkgutil.iter_modules(tomviz.io.formats.__path__,
                                                    prefix='tomviz.io.formats.'):
          m = importer.find_spec(name).loader.load_module()
          for _, c in inspect.getmembers(m, inspect.isclass):
              if inspect.getmodule(c) is m:
                  if issubclass(c, tomviz.io.Reader):
                      readers.append(
                          [
                              c.file_type().display_name,
                              c.file_type().extensions,
                              c
                          ]
                      )
      return readers
  
  
  def create_reader_instance(reader_class):
      return reader_class()
  
  
  def execute_reader(obj, path):
      return obj.read(path)
  
  
  def list_python_writers():
      writers = []
      for importer, name, _ in pkgutil.iter_modules(tomviz.io.formats.__path__,
                                                    prefix='tomviz.io.formats.'):
          m = importer.find_spec(name).loader.load_module()
          for _, c in inspect.getmembers(m, inspect.isclass):
              if inspect.getmodule(c) is m:
                  if issubclass(c, tomviz.io.Writer):
                      writers.append(
                          [
                              c.file_type().display_name,
                              c.file_type().extensions,
                              c
                          ]
                      )
      return writers
  
  
  def create_writer_instance(writer_class):
      return writer_class()
  
  
  def execute_writer(obj, path, data):
      obj.write(path, data)
  
subject: Fix flake8 issue