old_contents: class PydubException(Exception):
      """
      Base class for any Pydub exception
      """
  
  
  class TooManyMissingFrames(PydubException):
      pass
  
  
  class InvalidDuration(PydubException):
      pass
  
  
  class InvalidTag(PydubException):
      pass
  
  
  class InvalidID3TagVersion(PydubException):
      pass
  
  
  class CouldntDecodeError(PydubException):
      pass
  
  class CouldntEncodeError(PydubException):
      pass
  
  class MissingAudioParameter(PydubException):
      pass
  
new_contents: class PydubException(Exception):
      """
      Base class for any Pydub exception
      """
  
  
  class TooManyMissingFrames(PydubException):
      pass
  
  
  class InvalidDuration(PydubException):
      pass
  
  
  class InvalidTag(PydubException):
      pass
  
  
  class InvalidID3TagVersion(PydubException):
      pass
  
  
  class CouldntDecodeError(PydubException):
      pass
  
  
  class CouldntEncodeError(PydubException):
      pass
  
  
  class MissingAudioParameter(PydubException):
      pass
  
subject: Add blank lines to comply with PEP8