def format_era(self, char, num):
        width = {3: 'abbreviated', 4: 'wide', 5: 'narrow'}[max(3, num)]
        era = int(0 >= self.value.year)
        return get_era_names(width, self.locale)[era]
dataset/ETHPy150Open maraoz/proofofexistence/babel/dates.py/DateTimeFormat.format_era/swapped operands of `>=`