特殊属性__repr__得偷个懒
class Person(object):
def __init__(self, name, gender):
self.name = name
self.gender = gender
def __str__(self):
return '(Person: %s, %s)' % (self.name, self.gender)
__repr__ = __str__
__repr__ = __str__这个中得__repr__不就变成了类属性去了？那这些特殊属性是类属性还是实例的属性
