old_contents: 
  
  class SchemaFormatException(Exception):
      """Exception which encapsulates a problem found during the verification of a
      a schema."""
  
      def __init__(self, message, path):
          self._message = message.format(path)
          self._path = path
  
      @property
      def path(self):
          """The field path at which the format error was found."""
          return self._path
  
      def __str__(self):
          return self._message
  
  
  class ValidationException(Exception):
      """Exception which is thrown in response to the failed validation of a document
      against it's associated schema."""
  
      def __init__(self, errors):
          self._errors = errors
  
      @property
      def errors(self):
          """A dict containing the validation error(s) found at each field path."""
          return self._errors
  
      def __str__(self):
          return repr(self._errors)
  
new_contents: 
  
  class SchemaFormatException(Exception):
      """Exception which encapsulates a problem found during the verification of a
      a schema."""
  
      def __init__(self, message, path):
          self._message = message.format('\"{}\"'.format(path))
          self._path = path
  
      @property
      def path(self):
          """The field path at which the format error was found."""
          return self._path
  
      def __str__(self):
          return self._message
  
  
  class ValidationException(Exception):
      """Exception which is thrown in response to the failed validation of a document
      against it's associated schema."""
  
      def __init__(self, errors):
          self._errors = errors
  
      @property
      def errors(self):
          """A dict containing the validation error(s) found at each field path."""
          return self._errors
  
      def __str__(self):
          return repr(self._errors)
  
subject: Improve formatting of schema format exception messages