1 class eat(object):
2     def __init__(self,name):
3         self.name = name
4     @staticmethod #静态方法不能访问共有属性、不能访问实例
5     def eat(name,food):
6         print("%s is eating..%s" %(name,food))
7 p.eat("alex","food")

 1 class Dog(object):
 2     name = "我是类变量"
 3     def __init__(self,name):
 4         self.name = name
 5  
 6     @classmethod
 7     def eat(self):
 8         print("%s is eating" % self.name)
 9  
10  
11  
12 d = Dog("ChenRonghua")
13 d.eat()
14  
15  
16 #执行结果
17  
18 我是类变量 is eating

 1 class Dog(object):
 2  
 3     def __init__(self,name):
 4         self.name = name
 5  
 6     @property
 7     def eat(self):
 8         print(" %s is eating" %self.name)
 9  
10  
11 d = Dog("ChenRonghua")
12 d.eat

 1 class Flight(object):
 2     def __init__(self,name):
 3         self.flight_name = name
 4 
 5 
 6     def checking_status(self):
 7         print("checking flight %s status " % self.flight_name)
 8         return  1
 9 
10 
11     @property
12     def flight_status(self):
13         status = self.checking_status()
14         if status == 0 :
15             print("flight got canceled...")
16         elif status == 1 :
17             print("flight is arrived...")
18         elif status == 2:
19             print("flight has departured already...")
20         else:
21             print("cannot confirm the flight status...,please check later")
22     
23     @flight_status.setter #修改
24     def flight_status(self,status):
25         status_dic = {
26 : "canceled",
27 :"arrived",
28 : "departured"
29         }
30         print("\033[31;1mHas changed the flight status to \033[0m",status_dic.get(status) )
31 
32     @flight_status.deleter  #删除
33     def flight_status(self):
34         print("status got removed...")
35 
36 f = Flight("CA980")
37 f.flight_status
38 f.flight_status =  2 #触发@flight_status.setter 
39 del f.flight_status #触发@flight_status.deleter

 1 class Alert(object):
 2     def send(self):
 3         raise NotImplementedError
 4 class MailAlert(Alert):
 5     def send(self,msg):
 6         print("---sending..",msg)
 7 class SMSAlert(Alert):
 8     pass
 9 m = MailAlert()
10 m.send("df")

class C:

    def __init__(self):
        self.name = ‘wupeiqi‘



from lib.aa import C

obj = C()
print obj.__module__  # 输出 lib.aa，即：输出模块
print obj.__class__      # 输出 lib.aa.C，即：输出类

 1 try:
 2     int(‘add‘)
 3     li = [11,22]
 4     li[100]
 5 except IndexError as e:  #符合的情况下执行
 6     print("1",e)
 7 except ValueError as e:  #符合的情况下执行
 8     print("2",e)
 9 except Exception as e:  #都能匹配到，以上不满足的情况下，匹配该项。
10     print("3",e)
11 else:
12     print("else")
13 finally:
14     print("finally")  #最后肯定会执行