__format__ 一.__format__ 自定制格式化字符串 date_dic = { 'ymd': '{0.year}:{0.month}:{0.day}', 'dmy': '{0.day}/{0.month}/{0.year}', 'mdy': '{0.month}-{0.day}-{0.year}', } class Date: def __init__(self, year, month, day): self.year = year self.month = month self…