old_contents: #!/bin/env python
  #coding: utf-8
  
  from unittest import TestCase
  
  from formalchemy2.fields import Field
  from formalchemy2.renderers import FieldRenderer, FieldMultiChoiceRenderer
  
  # relative import
  import base_renderers
  
  
  class TestFieldRenderer(TestCase, base_renderers.FieldRendererMixin):
      """Test the Renderer class that other renderers will inherit from."""
  
      Renderer = FieldRenderer
  
  
  class TestFieldMultiChoiceRenderer(TestCase, base_renderers.FieldMultiChoiceRendererMixin):
      """Test the Renderer class that other renderers will inherit from."""
  
      Renderer = FieldMultiChoiceRenderer
  
new_contents: #!/bin/env python
  #coding: utf-8
  
  from unittest import TestCase
  
  from formalchemy2.renderers import FieldRenderer, FieldMultiChoiceRenderer
  
  # relative import
  import base_renderers
  
  
  class TestFieldRenderer(TestCase, base_renderers.FieldRendererMixin):
      """Test the Renderer class that other renderers will inherit from."""
  
      Renderer = FieldRenderer
  
  
  class TestFieldMultiChoiceRenderer(TestCase, base_renderers.FieldMultiChoiceRendererMixin):
      """Test the Renderer class that other renderers will inherit from."""
  
      Renderer = FieldMultiChoiceRenderer
  
subject: remove unused import