python的get set方法示例


class Critter(object):
    '''A virtual pet'''
    def __init__(self, name):
        print 'A new critter has been born!'
        self.__name = name

    def get_name(self):
        return self.__name

    def set_name(self, new_name):
        if new_name == '':
            print 'A critter's name can't be the empty string.'
            self.__name = new_name
            print 'Name change successful.'

    name = property(get_name, set_name)

    def talk(self):
        print '\nHi, I'm',

# main
crit = Critter('Poochie')

print '\nMy critter's name is:',
print '\nAttempting to change my critter's name.' = ''
print '\nAttempting to change my critter's name again.' = 'Randolph'