5.15博客

上午又是python和工程数学

不过两节课都搬进实验楼了，换换环境也不错

python学习：

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(-1,11,2)

c.display()

c = Cexception(2019,11,2)

c.display()

c = Cexception(2019,2,29)

c.display()

c = Cexception(2020,2,29)

c.display()