Python 编程 | 连载 15 - Python 的类

# 定义一个类
class Hero(object):
    name = 'Stark'
    def fight(self):
        print('IronMan fighting with thanos')
# 实例化一个对象
stark = Hero()
# 调用对象属性
print(stark.name)
# 调用对象的方法
stark.fight()
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class Hero(object):
    name = None
    address = None
    def fight(self):
        print('%s fight with thanos' % self.name)
    def rescue(self):
        print('%s helping people' % self.name)
steve = Hero()
steve.fight()
steve.rescue()
# 给属性赋值
stark = Hero()
stark.name = 'IronMan'
stark.fight()
stark.rescue()
# 定义新的属性
stark.suit = 'Mark 85'
print(stark.suit)
print(steve.suit)
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class Hero(object):
    # 其余内容保持不变
    def work(self):
        self.fight()
        self.rescue()
# 调用work函数
stark.work()      
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class Hero(object):
    # 其他函数保持不变
    def walk():
        print('walking')
# 其余代码保持不变
stark.walk()
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class Hero(object):
    # 类中其他属性和函数保持不变
    def work(self):
        def walk(name):
            return name
        res = walk(self.name)
        print('{} is walking'.format(res))
        self.fight()
        self.rescue()
# 其余代码保持不变
stark.work()   
# 在定义的函数体外调用会报错
walk()
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# 构造函数名必须为__init__，必须包含self参数
def __init__(self, name, address):
    self.name = name
    self.address = address
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class Hero(object):
    name = None
    address = None
    def __init__(self, name, address):
        self.name = name
        self.address = address
    def fight(self):
        print('%s fight with thanos' % self.name)
    def rescue(self):
        print('%s helping people' % self.name)
# 有了构造函数后，实例化对象一定要传递对象属性
stark = Hero('IronMan', 'NY')
print(stark.name)
print(stark.address)
stark.fight()
stark.rescue()
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class Cat(object):
    def __init__(self, name):
        self.name = name
    def run(self):
        result = self.__run()
        print(result)
    def __run(self):
        return f'小猫{self.name}开心的奔跑着'
    def dump(self):
        result = self.__dump()
        print(result)
    def __dump(self):
        return f'小猫{self.name}开心的跳着'
cat = Cat(name = 'pipi')
cat.run()
cat.dump()
cat.__run()
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print(cat.__dir__())
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print(cat._Cat__run())
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class Cat(object):
    __cat_type = 'cat'
    def __init__(self, name, sex):
        self.name = name
        self.__sex = sex
    def run(self):
        result = self.__run()
        print(result)
    def __run(self):
        return f'{self.__cat_type}小猫{self.name}{self.__sex}开心的奔跑着'
    def dump(self):
        result = self.__dump()
        print(result)
    def __dump(self):
        return f'{self.__cat_type}小猫{self.name}{self.__sex}开心的跳着'
cat = Cat(name = 'pipi', sex='boy')
cat.run()
cat.dump()
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print(cat.__sex)
print(cat.__cat_type)
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print(cat.__dir__())
print(cat._Cat__sex)
print(cat._Cat__cat_type)
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class Parent(object):
    def __hello(self, data):
        print('hello %s' % data)
    def helloworld(self):
        self.__hello('world')
if __name__ == '__main__':
    p = Parent()
    p.helloworld()
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