def _rfc822(dt):
    return formatdate(timegm(dt.utctimetuple()))
Reimplemented to hide the widget when the hide timer fires.
dataset/ETHPy150Open flask-restful/flask-restful/flask_restful/fields.py/_rfc822--crossover with--dataset/ETHPy150Open enthought/pyface/pyface/ui/qt4/console/call_tip_widget.py/CallTipWidget.timerEvent