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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 show_welcome_dialog(self):
 """Setup for showing welcome message dialog. This method will setup several things: - Only show welcome, organisation profile, and population parameter tab. Currently, they are the first 3 tabs. - Set the title - Move the check box for always showing welcome message. """

        self.welcome_layout.addWidget(self.welcome_message_check_box)
        while self.tabWidget.count() > 3:
            self.tabWidget.removeTab(self.tabWidget.count() - 1)
        self.setWindowTitle(self.tr('Welcome to InaSAFE %s' % get_version()))
        # Hide the export import button
        self.export_button.hide()
        self.import_button.hide()