定义一个异常类Cexception解决日期类实现中的自定义异常处理。设计的日期类应包含以下内容:
① 有三个成员数据:年、月、日;
② 有设置日期的成员函数;
③ 有用格式"月/日/年"输出日期的成员函数;
④ 要求在日期设置及有参构造函数中添加异常处理。
class Cexception : def __init__(self,year,month,day): if Cexception.judge(year,month,day) : self.year = year self.month = month self.day = day else: self.year = -1 self.month = -1 self.day = -1 print("日期有误") def setTime(self,year,month,day): if Cexception.judge(year,month,day) : self.year = year self.month = month self.day = day else: self.year = -1 self.month = -1 self.day = -1 print("日期有误") def display(self): if self.month ==-1 or self.year == -1 or self.day == -1: print("",end="") else: print(str(self.month)+"/"+str(self.day)+"/"+str(self.year)) def judge(year,month,day): leap = False legal = False if year>0: if year % 4 == 0 and year % 100 != 0 or year % 400 == 0: leap = True if month in [1, 3, 5, 7, 8, 10, 12]: if 1 <= day <= 31: legal = True elif month in [4, 6, 9, 11]: if 1 <= day <= 30: legal = True elif month == 2: if not leap and 1 <= day <= 28: legal = True elif leap and 1 <= day <= 29: legal = True else: legal = False return legal c = Cexception(-1,8,5) c.display() c = Cexception(2018,8,2) c.display() c = Cexception(2019,5,29) c.display() c = Cexception(2020,5,8) c.display()
标签:Cexception,self,month,日期,year,Date,异常,day From: https://www.cnblogs.com/y1126/p/17329633.html