（类）Program1.1

 1 class MyClass:
 2     
 3     i = 12345
 4     
 5     def __init__(self):
 6         self.data = "WOOWOWOWO"
 7     
 8     def f(self):
 9         return ‘Hello World‘
10     
11     def New(self,W = ‘1‘,N = ‘2‘, x = 33):
12         self.W = ‘lla is W‘
13         self.N = ‘lll‘
14         return W,N,x
15     
16     def x(self,ss = 1,dd = 2):
17         return ss,dd
18     
19 x = MyClass()
20 print(x.f())
21 print(x.i)
22 print(x.New())
23 print(x.New(‘张‘,‘三‘))
24 print(x.x())

Hello World
12345
(‘1‘, ‘2‘, 33)
(‘张‘, ‘三‘, 33)
(1, 2)

Traceback (most recent call last):
  File "E:/PyPrograms/Unit1/Day03/Class_1.py", line 22, in <module>
    print(x.W)
AttributeError: ‘MyClass‘ object has no attribute ‘W‘

    def New(self,W = ‘1‘,N = ‘2‘, x = 33):
        self.W = ‘lla is W‘
        self.N = ‘lll‘
        return W,N,x

    def x(self,ss = 1,dd = 2):
        return ss,dd

(‘1‘, ‘2‘, 33)
(‘张‘, ‘三‘, 33)
(1, 2)

 1 class people:
 2     # 定义基本属性
 3     # 定义私有属性,私有属性在类外部无法直接进行访问
 4     # 定义构造方法
 5     def __init__(self, n, a, w):
 6         self.name = n
 7         self.age = a
 8         self.__weight = w
 9 
10     def speak(self,address):
11         self.address = ‘lala‘
12         print("%s 说: 我 %d 岁。%s" % (self.name, self.age,self.address))
13 
14 p = people(‘runoob‘, 10, 30)
15 p.speak("zz")


输出为：
　　runoob 说: 我 10 岁。lala