class Cat(object):
__name = ''
__age =0
def __init__(self,name,age):
self.__name = name
self.__age = age
print 'init cat , name is %s;age is %d' %(name,age)
def getName(self):
return self.__name
def getAge(self):
return self.__age
def setName(self,name):
self.__name = name
def setAge(self,age):
self.__age = age
#bool(self) is True if you have not overwrite this function
def __nonzero__(self):
'return true if name is null'
if __name=='' :
return True
return False
print 'Hello .'