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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def removeTab(self, index):
 """ Removes tab at index ``index``. This method will emits tab_closed for the removed tab. :param index: index of the tab to remove. """

        widget = self.widget(index)
        try:
            self._widgets.remove(widget)
        except ValueError:
            pass
        self.tab_closed.emit(widget)
        self._del_code_edit(widget)
        QTabWidget.removeTab(self, index)
        if widget == self._current:
            self._current = None