    def blur(self):
        """
        Call this to take the input focus from this Layout.
        """
        logger.debug("Blur: %s", self)
        if self._has_focus:
            self._has_focus = False
            try:
                self._columns[self._live_col][self._live_widget].blur()
            except IndexError:
                # don't worry if there are no active widgets in the Layout
                pass
Call this to take the input focus from this Layout.
asciimatics/widgets/layout.py