parameters: (self, begin, end)
docstring: Get bytes from the media.
  
      Args:
        begin: int, offset from beginning of file.
        length: int, number of bytes to read, starting at begin.
  
      Returns:
        A string of bytes read. May be shorter than length if EOF was reached
        first.
docstring_summary: Get bytes from the media.
docstring_tokens: Get bytes from the media .
function: def getbytes(self, begin, end):
      """Get bytes from the media.
  
      Args:
        begin: int, offset from beginning of file.
        length: int, number of bytes to read, starting at begin.
  
      Returns:
        A string of bytes read. May be shorter than length if EOF was reached
        first.
      """
      raise NotImplementedError()
function_tokens: def getbytes ( self , begin , end ) : raise NotImplementedError ( )