def __unicode__(self):
    prepr = ('[%s]' % ','.join(map(pprint_thing, self)))
    return ('%s(%s)' % (self.__class__.__name__, prepr))
def __unicode__(self):
    prepr = ('[%s]' % ','.join(map(pprint_thing, self)))
    return ('%s(%s)' % (self.__class__.__name__, prepr))