<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def write_err(self, text):
 """Write error text in the terminal without breaking the spinner."""

        stderr = self.stderr
        if self.stderr.closed:
            stderr = sys.stderr
        stderr.write(decode_output(u"\r", target_stream=stderr))
        stderr.write(decode_output(CLEAR_LINE, target_stream=stderr))
        if text is None:
            text = ""
        text = decode_output(u"{0}\n".format(text), target_stream=stderr)
        self.stderr.write(text)
        self.out_buff.write(decode_output(text, target_stream=self.out_buff))