Python 기초 018 - 클래스 생 성 및 실례 화, 클래스 계승

#      
In [3]: class Employee(object):
...:     empCount = 0                                        
...:     def __init__(self,name,salary):                     #      
...:         self.name=name
...:         self.salary = salary
...:         Employee.empCount += 1
...:     def displayCount(self):
...:         print 'Total Employee %d' % Employee.empCount
...:     def displayEmployee(self):
...:         print 'Name:',self.name, 'salary:',self.salary
...:         

In [4]: emp1 = Employee('Zara',2000)                        #          
In [5]: emp2 = Employee('Manni',5000)
In [6]: emp1.displayEmployee()                              #            
Name: Zara salary: 2000
In [7]: emp2.displayEmployee()
Name: Manni salary: 5000
In [8]: print 'Total Employee %d' % Employee.empCount       #        
Total Employee 2
In [9]: emp1.age = 7                                        #     age  
In [10]: emp1.displayEmployee() 
Name: Zara salary: 2000
In [11]: emp1.age = 8                                       #     age  
In [13]: hasattr(emp1, 'age')                               #              
Out[13]: True
In [14]: getattr(emp1, 'age')                               #       
Out[14]: 8
In [15]: setattr(emp2, 'age', 18)                           #       
In [16]: getattr(emp2, 'age')
Out[16]: 18
In [17]: delattr(emp1, 'age')                               #       
In [18]: hasattr(emp1, 'age')
Out[18]: False

#     
In [20]: class Parent(object):
...:     parentAttr  = 100
...:     def __init__(self):
...:         print '        '
...:     def parentMethod(self):
...:         print '      '
...:     def setAttr(self, attr):
...:         Parent.parentAttr = attr
...:     def getAttr(self):
...:         print "    ：",Parent.parentAttr
...: class Child(Parent):
...:     def __init__(self):
...:         print "        "
...:     def childMethod(self):
...:         print '      '
...:         

In [21]: c = Child()                        #      
        
In [23]: c.childMethod()                    #       
      
In [25]: c.parentMethod()                   
      
In [27]: c.setAttr(200)                     #     
In [28]: c.getAttr()
    ： 200
In [33]: issubclass(Child,Parent)           #          
Out[33]: True

#     
In [38]: class P1(object):
...:     def foo(self):
...:         print 'called P1-foo()'
...: class P2(object):
...:     def foo(self):
...:         print 'called P2-foo()'
...:     def bar(self):
...:         print 'called P2-bar()'
...: class C1(P1,P2):
...:     def bar(self):
...:         print 'called C1-bar()'
...:         
In [39]: c = C1()                           #      
In [40]: c.foo()                            #     P1    ，     P1      P2   
called P1-foo()
In [41]: c.bar()                            #               ，             
called C1-bar()