old_contents: # -*- coding: utf-8 -*-
  """Library specific exception definitions."""
  import sys
  
  
  class PytubeError(Exception):
      """Base pytube exception that all others inherent.
  
      This is done to not pollute the built-in exceptions, which *could* result
      in unintended errors being unexpectedly and incorrectly handled within
      implementers code.
      """
  
  
  class ExtractError(PytubeError):
      """Data extraction based exception."""
  
      def __init__(self, msg, video_id=None):
          """Construct an instance of a :class:`ExtractError <ExtractError>`.
  
          :param str msg:
              User defined error message.
          :param str video_id:
              A YouTube video identifer.
          """
          if video_id is not None:
              msg = '{video_id}: {msg}'.format(video_id=video_id, msg=msg)
  
          super(ExtractError, self).__init__(msg)
  
          self.exc_info = sys.exc_info()
          self.video_id = video_id
  
  
  class RegexMatchError(ExtractError):
      """Regex pattern did not return any matches."""
  
  
  class AgeRestrictionError(ExtractError):
      """Content is age restricted."""
  
new_contents: # -*- coding: utf-8 -*-
  """Library specific exception definitions."""
  import sys
  
  
  class PytubeError(Exception):
      """Base pytube exception that all others inherent.
  
      This is done to not pollute the built-in exceptions, which *could* result
      in unintended errors being unexpectedly and incorrectly handled within
      implementers code.
      """
  
  
  class ExtractError(PytubeError):
      """Data extraction based exception."""
  
      def __init__(self, msg, video_id=None):
          """Construct an instance of a :class:`ExtractError <ExtractError>`.
  
          :param str msg:
              User defined error message.
          :param str video_id:
              A YouTube video identifer.
          """
          if video_id is not None:
              msg = '{video_id}: {msg}'.format(video_id=video_id, msg=msg)
  
          super(ExtractError, self).__init__(msg)
  
          self.exc_info = sys.exc_info()
          self.video_id = video_id
  
  
  class RegexMatchError(ExtractError):
      """Regex pattern did not return any matches."""
  
subject: Remove age restricted exception