code: def check_with_pep8(source_code, filename=None):
      
      try:
          args = get_checker_executable('pycodestyle')
          results = check(args, source_code, filename=filename, options=['-r'])
      except Exception:
          # Never return None to avoid lock in spyder/widgets/editor.py
          # See Issue 1547
          results = []
          if DEBUG_EDITOR:
              traceback.print_exc()  # Print exception in internal console
      return results
docs: Check source code with pycodestyle