0702面向对象180

  1 print('hehda---------------------------------------------------------------------------------------------------------------------------------------------')
  2 
  3 class MyClass:
  4     i = 123456
  5     def f(self):
  6         # print('The function in class')
  7         return 'hhe '
  8 x = MyClass()
  9 # print(MyClass.i)
 10 # print(MyClass.f())
 11 
 12 print(x.i)
 13 print(x.f())
 14 print('hehda----------------------------------------------------------------------------------------------------------------------------------------')
 15 
 16 class complex:
 17     def __init__(self,realpart,imagpart):
 18         self.r = realpart
 19         self.i = imagpart
 20 x = complex(3.0,4.5)
 21 print(x.r,x.i)
 22 
 23 
 24 
 25 print('hehda----------------------------------------------------------------------------------------------------------')
 26 
 27 class Test:
 28     def prt(self):
 29         print(self)
 30         print(self.__class__)
 31 
 32 t = Test()
 33 t.prt()
 34 
 35 
 36 
 37 print('hehda--------------------------------------------------------------------------------------------------------------------------------------------')
 38 class info:
 39     name = ''
 40     age = 0
 41     __weight = 0
 42     def info1(self,n,a,w):
 43         self.name = n
 44         self.age = a
 45         self.__weight = w
 46     def speak(self):
 47         print('{0}说我{1}了重'.format(self.name,self.age,self.__weight))
 48 
 49 p = info()
 50 p.info1('Runoob',10,30)
 51 p.speak()
 52 # runoob 说: 我 10 岁。
 53 
 54 
 55 print('hehda---------------------------------------------------------------------------------------------------------------------------------------')
 56 class info:
 57     name = ''
 58     age = 0
 59     __weight = 0
 60     def info1(self,n,a,w):
 61         self.name = n
 62         self.age = a
 63         self.__weight = w
 64     def speak(self):
 65         print('{0}说我{1}了重{2}'.format(self.name,self.age,self.__weight))
 66 
 67 p = info()
 68 p.info1('Runoob',10,30)
 69 p.speak()
 70 # runoob 说: 我 10 岁。
 71 '-----------对比以上两种写法---------------------'
 72 class people:
 73     name = ''
 74     age = 0
 75     __weight = 0
 76     def __init__(self,n,a,w):
 77         self.name = n
 78         self.age = a
 79         self.__weight = w
 80     def speak(self):
 81         print('{0}speak i am {1} years old and {2} weight'.format(self.name,self.age,self.__weight))
 82 
 83 p = people('Runoob',10,20)
 84 p.speak()
 85 
 86 
 87 print('inherit----------------------------------------------------------------------------------------------------------------------------------------')
 88 class people:
 89     name = ''
 90     age = 0
 91     __weight = 0
 92     def __init__(self,n,a,w):
 93         self.name = n
 94         self.age = a
 95         self.__weight = w
 96     def speak(self):
 97         print('{0}speak i am {1} years old and weight {2}kg'.format(self.name,self.age,self.__weight))
 98 
 99 # p = people('Jo1',28,45)
100 # p.speak()
101 class student(people):
102     grade = ''
103     def __init__(self,n,a,w,g):
104         people.__init__(self,n,a,w)
105         self.grade = g
106     def speak(self):
107         #打印内容中如果添加上self.__weight是错误的，__私有的只能在内部访问，在这个函数中不能访问
108         print('{0}speak i am {1} years ild and weight kg and in class {2}'.format(self.name,self.age,self.grade))
109 
110 info = student('Jo',22,45,'6')
111 info.speak()
112 
113 
114 
115 
116 print('inherit---------------------------------------------------------------------------------------------------------------------------------------------')
117 # class DerivedClassName(modlename.BaseClassName)
118 # 我叫 Tim，我是一个演说家，我演讲的主题是 Python
119 
120 class people:
121     name = ''
122     age = 0
123     __weight = 0
124     def __init__(self,n,a,w):
125         self.name = n
126         self.age = a
127         self.__weight = w
128     def speak(self):
129         print('My name is {0},i am {1} years old and weight {2}kg'.format(self.name,self.age,self.__weight))
130 
131 # p = people('Jo1',28,45,)
132 # p.speak()
133 
134 class student(people):
135     grade = ''
136     def __init__(self,n,a,w,g):
137         people.__init__(self,n,a,w)
138         self.grade = g
139     def speak(self):
140         print('My name is {0},i am {1} years old and weight and in class {2}'.format(self.name,self.age,self.grade))
141 
142 # s = student('jo2',29,46,'6')
143 # s.speak()
144 
145 class speaker:
146     #这里变量的声明发现有没有都可
147     # name = ''
148     # topic = ''
149     def __init__(self,n,t):
150         self.name = n
151         self.topic = t
152     def speak(self):
153         print('My name is {0} .My topic is {1}'.format(self.name,self.topic))
154 
155 # sp = speaker('Jo3','Python')
156 # sp.speak()
157 
158 class sample(speaker,student):
159     def __init__(self,n,a,w,g,t):
160         student.__init__(self,n,a,w,g)
161         speaker.__init__(self,n,t)
162 
163 test = sample('Jo4',30,47,'8','Python')
164 test.speak()
165 
166 
167 
168 
169 print('methods to rewrite------------------------------------------------------------------------------------------------------------------------------')
170 class Parent:
171     def myMethod(self):
172         print('调用父类方法')
173 
174 class Child(Parent):
175     def myMethod(self):
176         print('调用子类方法')
177 
178 c = Child()
179 c.myMethod()
180 super(Child,c).myMethod()