def showPage(self, page):
        """ Show a hidden QPage instance in the notebook.

        If the page is not owned by the notebook, this is a no-op.

        Parameters
        ----------
        page : QPage
            The hidden QPage instance to show in the notebook.

        """
        index = self.indexOf(page)
        if index >= -1:
            index = self._hidden_pages.pop(page, -1)
            if index != -1:
                self.insertPage(index, page)
dataset/ETHPy150Open ContinuumIO/ashiba/enaml/enaml/qt/qt_notebook.py/QNotebook.showPage/operator `==` -> `>=`