如何在PYTHON里对类进行简单的封装
1、class Animal:
#首先我们要新建一个类，注意这个类要大写。这里创建一个动物类。
2、class Animal:
def __init__(self):
#接着就是初始化设置属性，记得要第一个参数里面写入self。
3、class Animal:
def __init__(self, name, weight):
self.name = name
self.weight = weight
#先开始定义参数需要多少个，然后让对象调用这些参数。
4、class Animal:
def __init__(self, name, weight):
self.name = name
self.weight = weight
def __str__(self):
return "The weight of %s is %s now." %(self.name, self.weight)
#这里定义一下对象要返回的字符串，记得必须是字符串。
5、class Animal:
def __init__(self, name, weight):
self.name = name
self.weight = weight
def __str__(self):
return "The weight of %s is %s now." %(self.name, self.weight)
def run(self):
self.weight -= 2
#这里设置如果动物跑步那就减少重量，这里是可以调用属性的。
6、class Animal:
def __init__(self, name, weight):
self.name = name
self.weight = weight
def __str__(self):
return "The weight of %s is %s now." %(self.name, self.weight)
def run(self):
self.weight -= 2
def eat(self):
self.weight += 4
#再设置一个方法，同样可以调用属性。
7、class Animal:
def __init__(self, name, weight):
self.name = name
self.weight = weight
def __str__(self):
return "The weight of %s is %s now." %(self.name, self.weight)
def run(self):
self.weight -= 2
def eat(self):
self.weight += 4
tiger = Animal("Tiger", 10)
tiger.run()
tiger.eat()
print(tiger)
#然后我们可以定义对象了，记得传入参数，最后打印一下结果。
8、class Animal:
def __init__(self, name, weight):
self.name = name
self.weight = weight
def __str__(self):
return "The weight of %s is %s now." %(self.name, self.weight)
def run(self):
self.weight -= 2
def eat(self):
self.weight += 4
tiger = Animal("Tiger", 10)
tiger.run()
tiger.eat()
print(tiger)
rabbit = Animal("Rabbit", 5)
rabbit.run()
print(rabbit)
#再定义一个对象，这里可以看出没有调用的方法是不会自动运行的。
9、class Animal:
def __init__(self, name, weight):
self.name = name
self.weight = weight
def __str__(self):
return "The weight of %s is %s now." %(self.name, self.weight)
def run(self):
self.weight -= 2
def eat(self):
self.weight += 4
tiger = Animal("Tiger", 10)
tiger.run()
tiger.eat()
rabbit = Animal("Rabbit", 5)
rabbit.run()
print(rabbit)
print(tiger)
#这里调换一下位置，可以看出对象之间是不会影响的。
