old_contents: # Copyright (C) 2003-2007, 2009-2011 Nominum, Inc.
  #
  # Permission to use, copy, modify, and distribute this software and its
  # documentation for any purpose with or without fee is hereby granted,
  # provided that the above copyright notice and this permission notice
  # appear in all copies.
  #
  # THE SOFTWARE IS PROVIDED "AS IS" AND NOMINUM DISCLAIMS ALL WARRANTIES
  # WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  # MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL NOMINUM BE LIABLE FOR
  # ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  # WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  # ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
  # OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  
  """Common DNS Exceptions."""
  
  class DNSException(Exception):
      """Abstract base class shared by all dnspython exceptions."""
      pass
  
  class FormError(DNSException):
      """DNS message is malformed."""
      pass
  
  class SyntaxError(DNSException):
      """Text input is malformed."""
      pass
  
  class UnexpectedEnd(SyntaxError):
      """Raised if text input ends unexpectedly."""
      pass
  
  class TooBig(DNSException):
      """The message is too big."""
      pass
  
  class Timeout(DNSException):
      """The operation timed out."""
      pass
  
new_contents: # Copyright (C) 2003-2007, 2009-2011 Nominum, Inc.
  #
  # Permission to use, copy, modify, and distribute this software and its
  # documentation for any purpose with or without fee is hereby granted,
  # provided that the above copyright notice and this permission notice
  # appear in all copies.
  #
  # THE SOFTWARE IS PROVIDED "AS IS" AND NOMINUM DISCLAIMS ALL WARRANTIES
  # WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  # MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL NOMINUM BE LIABLE FOR
  # ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  # WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  # ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
  # OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  
  """Common DNS Exceptions."""
  
  class DNSException(Exception):
      """Abstract base class shared by all dnspython exceptions."""
      def __init__(self, *args):
          if args:
              super(DNSException, self).__init__(*args)
          else:
              # doc string is better implicit message than empty string
              super(DNSException, self).__init__(self.__doc__)
  
  class FormError(DNSException):
      """DNS message is malformed."""
      pass
  
  class SyntaxError(DNSException):
      """Text input is malformed."""
      pass
  
  class UnexpectedEnd(SyntaxError):
      """Raised if text input ends unexpectedly."""
      pass
  
  class TooBig(DNSException):
      """The message is too big."""
      pass
  
  class Timeout(DNSException):
      """The operation timed out."""
      pass
  
subject: Support string representation for all DNSExceptions.