<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def _handle_exception():
 """Print exceptions raised by subscribers to stderr."""

    # Heavily influenced by logging.Handler.handleError.

    # See note here:
    # https://docs.python.org/3.4/library/sys.html#sys.__stderr__
    if sys.stderr:
        einfo = sys.exc_info()
        try:
            traceback.print_exception(einfo[0], einfo[1], einfo[2],
                                      None, sys.stderr)
        except IOError:
            pass
        finally:
            del einfo