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print('age must be integer.') return self.__age = age def setSex(self, sex):
if sex != 'man' and sex != 'woman': print('sex must be \ return self.__sex = sex def show(self): print(self.__name) print(self.__age) print(self.__sex) class Student(Person):
def __init__(self, name='', age = 30, sex = 'man', major = 'Computer'): #µ÷ÓûùÀ๹Ôì·½·¨³õʼ»¯»ùÀàµÄ˽ÓÐÊý¾Ý³ÉÔ± super(Student, self).__init__(name, age, sex)
self.setMajor(major) #³õʼ»¯ÅÉÉúÀàµÄÊý¾Ý³ÉÔ± def setMajor(self, major): if not isinstance(major, str): print('major must be a string.') return
self.__major = major def show(self):
super(Student, self).show() print(self.__major) if __name__ =='__main__':
zhangsan = Person('Zhang San', 19, 'man') zhangsan.show()
lisi = Student('Li Si',32, 'man', 'Math') lisi.show()
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class Vecter3:
def __init__(self, x=0, y=0, z=0): self.X = x self.Y = y self.Z = z def __add__(self, n): r = Vecter3() r.X = self.X + n.X r.Y = self.Y + n.Y r.Z = self.Z + n.Z return r
def __sub__(self, n): r = Vecter3() r.X = self.X - n.X r.Y = self.Y - n.Y r.Z = self.Z - n.Z return r
def __mul__(self, n): r = Vecter3() r.X = self.X * n r.Y = self.Y * n r.Z = self.Z * n return r
def __truediv__(self, n): r = Vecter3() r.X = self.X / n r.Y = self.Y / n r.Z = self.Z / n return r
def __floordiv__(self, n): r = Vecter3() r.X = self.X // n r.Y = self.Y // n