(self)
Return the current position of the read file pointer.

        If the underlying read file is a stream, this will return the position of the stream. Otherwise, will return
        the position of the file descriptor in the file.
Return the current position of the read file pointer.
Return the current position of the read file pointer .
def write_pos(self):
        """
        Return the current position of the read file pointer.

        If the underlying read file is a stream, this will return the position of the stream. Otherwise, will return
        the position of the file descriptor in the file.
        """
        raise NotImplementedError
def write_pos ( self ) : raise NotImplementedError