old_contents: """ Dont duplicate errors same type. """
  
  DUPLICATES = (
  
      # multiple statements on one line
      [('pep8', 'E701'), ('pylint', 'C0321')],
  
      # missing whitespace around operator
      [('pep8', 'E225'), ('pylint', 'C0326')],
  
      # unused variable
      [('pylint', 'W0612'), ('pyflakes', 'W0612')],
  
      # undefined variable
      [('pylint', 'E0602'), ('pyflakes', 'E0602')],
  
      # unused import
      [('pylint', 'W0611'), ('pyflakes', 'W0611')],
  
      # unexpected spaces
      [('pylint', 'C0326'), ('pep8', 'E251')],
  
      # long lines
      [('pylint', 'C0301'), ('pep8', 'E501')],
  
      # whitespace before '('
      [('pylint', 'C0326'), ('pep8', 'E211')],
  
  )
  
  DUPLICATES = dict((key, values) for values in DUPLICATES for key in values)
  
  
  class Error(object):
  
      """ Store error information. """
  
      def __init__(self, linter="", col=1, lnum=1, type="E",
                   text="unknown error", filename="", **kwargs):
          """ Init error information with default values. """
          text = ' '.join(str(text).strip().split('\n'))
          if linter:
              text = "%s [%s]" % (text, linter)
          number = text.split(' ', 1)[0]
          self._info = dict(linter=linter, col=col, lnum=lnum, type=type,
                            text=text, filename=filename, number=number)
  
      def __getattr__(self, name):
          return self._info[name]
  
      def __getitem__(self, name):
          return self._info[name]
  
      def __repr__(self):
          return "<Error: %s %s>" % (self.number, self.linter)
  
  # pylama:ignore=W0622,D
  
new_contents: """ Dont duplicate errors same type. """
  
  DUPLICATES = (
  
      # multiple statements on one line
      [('pep8', 'E701'), ('pylint', 'C0321')],
  
      # missing whitespace around operator
      [('pep8', 'E225'), ('pylint', 'C0326')],
  
      # unused variable
      [('pylint', 'W0612'), ('pyflakes', 'W0612')],
  
      # undefined variable
      [('pylint', 'E0602'), ('pyflakes', 'E0602')],
  
      # unused import
      [('pylint', 'W0611'), ('pyflakes', 'W0611')],
  
      # unexpected spaces
      [('pylint', 'C0326'), ('pep8', 'E251')],
  
      # long lines
      [('pylint', 'C0301'), ('pep8', 'E501')],
  
      # whitespace before '('
      [('pylint', 'C0326'), ('pep8', 'E211')],
  
      # statement ends with a semicolon
      [('pylint', 'W0301'), ('pep8', 'E703')],
  
      # multiple statements on one line
      [('pylint', 'C0321'), ('pep8', 'E702')],
  
  )
  
  DUPLICATES = dict((key, values) for values in DUPLICATES for key in values)
  
  
  class Error(object):
  
      """ Store error information. """
  
      def __init__(self, linter="", col=1, lnum=1, type="E",
                   text="unknown error", filename="", **kwargs):
          """ Init error information with default values. """
          text = ' '.join(str(text).strip().split('\n'))
          if linter:
              text = "%s [%s]" % (text, linter)
          number = text.split(' ', 1)[0]
          self._info = dict(linter=linter, col=col, lnum=lnum, type=type,
                            text=text, filename=filename, number=number)
  
      def __getattr__(self, name):
          return self._info[name]
  
      def __getitem__(self, name):
          return self._info[name]
  
      def __repr__(self):
          return "<Error: %s %s>" % (self.number, self.linter)
  
  # pylama:ignore=W0622,D
  
subject: Update errors list