如何从两个不同的日期获得多年的差异？

from datetime import datetime

date1 = '2020-01-01'
date2 = '2022-01-01'

date_format = '%Y-%m-%d'

date1_obj = datetime.strptime(date1, date_format)
date2_obj = datetime.strptime(date2, date_format)

difference = date2_obj.year - date1_obj.year

print(f"两个日期之间相差{difference}年。")