<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def update_helper_political_level(self):
 """To update the helper about the country and the admin_level."""

        current_country = self.country_comboBox.currentText()
        index = self.admin_level_comboBox.currentIndex()
        current_level = self.admin_level_comboBox.itemData(index)
        content = None
        try:
            content = \
                self.countries[current_country]['levels'][str(current_level)]
            if content == 'N/A' or content == 'fixme' or content == '':
                raise KeyError
        except KeyError:
            content = self.tr('undefined')
        finally:
            text = self.tr('which represents %s in') % content
            self.boundary_helper.setText(text)