python笔记-011-★类

from random import randint
class Student():
    """学生类"""

    def __init__(self, name, age):
        self.name = name
        self.age = age

    # 打招呼
    def sayHello(self):
        print("Hello,my name is " + self.name.title()
               + ". I'm " + str(self.age) + " years old.")

print("======")
# 类创建实例
zhangsan = Student('zhangsan', 18)
# 访问属性
print(zhangsan.name)
# 调用方法
zhangsan.sayHello()

# ★继承
class Person():
    '''人类'''

    def __init__(self, name, gender):
        self.name = name
        self.gender = gender

    def say(self):
        print("my name is " + self.name + ",my gender is "
              + self.gender + ",i am a person.")

class Teacher(Person):
    '''教师类'''

    def __init__(self, name, gender, title):
        Person.__init__(self, name, gender)
        # 职称
        self.title = title

    def say(self):
        print("my name is " + self.name + ",my gender is "
              + self.gender + ",my title is " + self.title
              + ",i am a teacher.")

xiaoming = Person('小明', '男')
xiaoming.say()
xiaohong = Teacher('小红', '女', '高级教师')
xiaohong.say()
print(type(xiaoming) == Person)  # True
print(type(xiaohong) == Person)  # False
print(type(xiaohong) == Teacher)  # True
print(isinstance(xiaohong, Person))  # True
# ★type()不会认为子类是一种父类类型
# ★isinstance()会认为子类是一种父类类型

# 练习
# 创建一个骰子类，并投掷10次
class Dice:
    """骰子类"""

    def __init__(self):
        self.sides = 6

    def roll_dice(self):
        print(randint(1, self.sides))

s6dice = Dice()
for v in range(1, 11):
    s6dice.roll_dice()
print('======')
s10dice = Dice()
s10dice.sides = 10
for v in range(1, 11):
    s10dice.roll_dice()