python中property(lambda self: object())简单解释，,最后4行lambda

python中property(lambda self: object())简单解释，,最后4行lambda

最后4行lambda。问题是：如何运作？它们的含义和结果是什么？您能否以简单的方式显示该声明的示例？现在谢谢！

class error(Exception):    """ Base class for I/O related errors. """    def __init__(self, *args, **kwargs): # real signature unknown        pass    @staticmethod # known case of __new__    def __new__(S, *more): # real signature unknown; restored from __doc__        """ T.__new__(S, ...) -> a new object with type S, a subtype of T """        pass    def __reduce__(self, *args, **kwargs): # real signature unknown        pass    def __str__(self): # real signature unknown; restored from __doc__        """ x.__str__() <==> str(x) """        pass    characters_written = property(lambda self: object()) # default    errno = property(lambda self: object()) # default    filename = property(lambda self: object()) # default    strerror = property(lambda self: object()) # default

1个

property是内置的。通常用作装饰器。该代码与此等效，可能看起来更加熟悉：

class error(Exception):    #...    @property    def characters_written(self):        return object()    @property    def errno(self):        return object()    @property    def filename(self):        return object()    @property    def strerror(self):        return object()

python中property(lambda self: object())简单解释