python3 面向对象__类的内置属性与方法的实例代码

Python  /  管理员 发布于 7年前   139

0.object类源码

class object:  """ The most base type """  def __delattr__(self, *args, **kwargs): # real signature unknown    """ Implement delattr(self, name). """    pass  def __dir__(self): # real signature unknown; restored from __doc__    """    __dir__() -> list    default dir() implementation    """    return []  def __eq__(self, *args, **kwargs): # real signature unknown    """ Return self==value. """    pass  def __format__(self, *args, **kwargs): # real signature unknown    """ default object formatter """    pass  def __getattribute__(self, *args, **kwargs): # real signature unknown    """ Return getattr(self, name). """    pass  def __ge__(self, *args, **kwargs): # real signature unknown    """ Return self>=value. """    pass  def __gt__(self, *args, **kwargs): # real signature unknown    """ Return self>value. """    pass  def __hash__(self, *args, **kwargs): # real signature unknown    """ Return hash(self). """    pass  def __init_subclass__(self, *args, **kwargs): # real signature unknown    """    This method is called when a class is subclassed.    The default implementation does nothing. It may be    overridden to extend subclasses.    """    pass  def __init__(self): # known special case of object.__init__    """ Initialize self. See help(type(self)) for accurate signature. """    pass  def __le__(self, *args, **kwargs): # real signature unknown    """ Return self<=value. """    pass  def __lt__(self, *args, **kwargs): # real signature unknown    """ Return self<value. """    pass  @staticmethod # known case of __new__  def __new__(cls, *more): # known special case of object.__new__    """ Create and return a new object. See help(type) for accurate signature. """    pass  def __ne__(self, *args, **kwargs): # real signature unknown    """ Return self!=value. """    pass  def __reduce_ex__(self, *args, **kwargs): # real signature unknown    """ helper for pickle """    pass  def __reduce__(self, *args, **kwargs): # real signature unknown    """ helper for pickle """    pass  def __repr__(self, *args, **kwargs): # real signature unknown    """ Return repr(self). """    pass  def __setattr__(self, *args, **kwargs): # real signature unknown    """ Implement setattr(self, name, value). """    pass  def __sizeof__(self): # real signature unknown; restored from __doc__    """    __sizeof__() -> int    size of object in memory, in bytes    """    return 0  def __str__(self, *args, **kwargs): # real signature unknown    """ Return str(self). """    pass  @classmethod # known case  def __subclasshook__(cls, subclass): # known special case of object.__subclasshook__    """    Abstract classes can override this to customize issubclass().    This is invoked early on by abc.ABCMeta.__subclasscheck__().    It should return True, False or NotImplemented. If it returns    NotImplemented, the normal algorithm is used. Otherwise, it    overrides the normal algorithm (and the outcome is cached).    """    pass  __class__ = None # (!) forward: type, real value is ''  __dict__ = {}  __doc__ = ''  __module__ = ''

1.内置属性说明

①__class__:说明对象处于模块中的哪一个类

②[类名].__dict__:打印类的所有属性与方法(包括继承自基类的属性和方法)（包括内置属性和方法）

   [对象].__dict__:打印对象的所有属性（私有和公有）

总结

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