python添加、修改、删除、访问类对象属性的2种方法

1.直接添加、修改、删除、访问类对象属性

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 ",Employee.empCount

def displayEmployee(self) :

print "name :",self.name  , ", salary :", self.salary

emp1 = Employee("SR", 10000)

emp1.displayCount()

emp1.displayEmployee()

emp1.salary = 20000

print emp1.salary

emp1.age = 25

print emp1.age

del emp1.age

Employee.empCount=500

print Employee.empCount

Employee.cc="abc"

print Employee.cc

del Employee.empCount

print Employee.empCount

2.使用函数添加、删除、修改、访问类对象属性

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 ",Employee.empCount

def displayEmployee(self):

print "name:",self.name,",salary:",self.salary

emp1=Employee("SR",100000)

if hasattr(emp1,"name"):

print u"属性name存在"

else:

print u"属性name不存在"

try:

a=getattr(emp1,"name")

print u"name属性的值:",a

except Exception,e:

print e

setattr(emp1,"tel","13111111111")

try:

a=getattr(emp1,"tel")

print u"新添加的tel属性的值：",a

except Exception,e:

print e

try:

delattr(emp1,"tel")

except Exception,e:

print e

else:

if hasattr(emp1,"tel"):

print u"属性tel存在"

else:

print u"属性tel不存在"