code: def _priority_key(pep8_result):
      
      priority = [
          # Fix multiline colon-based before semicolon based.
          'e701',
          # Break multiline statements early.
          'e702',
          # Things that make lines longer.
          'e225', 'e231',
          # Remove extraneous whitespace before breaking lines.
          'e201',
          # Shorten whitespace in comment before resorting to wrapping.
          'e262'
      ]
      middle_index = 10000
      lowest_priority = [
          # We need to shorten lines last since the logical fixer can get in a
          # loop, which causes us to exit early.
          'e501'
      ]
      key = pep8_result['id'].lower()
      try:
          return priority.index(key)
      except ValueError:
          try:
              return middle_index + lowest_priority.index(key) + 1
          except ValueError:
              return middle_index
docs: Key for sorting PEP8 results.
  
      Global fixes should be done first. This is important for things like
      indentation.