type和dir的区别是啥啊

admin.

type和dir的区别是啥啊 。我看都能显示类型的

～风介～

貌似不同吧~{:7_181:}

1. >>> help(dir)
   
2. Help on built-in function dir in module builtins:
   
3. 
   
4. dir(...)
   
5.     dir([object]) -> list of strings
   
6.    
   
7.     If called without an argument, return the names in the current scope.
   
8.     Else, return an alphabetized list of names comprising (some of) the attributes
   
9.     of the given object, and of attributes reachable from it.
   
10.     If the object supplies a method named __dir__, it will be used; otherwise
    
11.     the default dir() logic is used and returns:
    
12.       for a module object: the module's attributes.
    
13.       for a class object:  its attributes, and recursively the attributes
    
14.         of its bases.
    
15.       for any other object: its attributes, its class's attributes, and
    
16.         recursively the attributes of its class's base classes.
    
17. 
    
18. >>> dir(dir)
    
19. ['__call__', '__class__', '__delattr__', '__dir__', '__doc__', '__eq__', '__format__', '__ge__', '__getattribute__', '__gt__', '__hash__', '__init__', '__le__', '__lt__', '__module__', '__name__', '__ne__', '__new__', '__qualname__', '__reduce__', '__reduce_ex__', '__repr__', '__self__', '__setattr__', '__sizeof__', '__str__', '__subclasshook__', '__text_signature__']
    
20. >>> help(help)
    
21. Help on _Helper in module _sitebuiltins object:
    
22. 
    
23. class _Helper(builtins.object)
    
24. |  Define the builtin 'help'.
    
25. |  This is a wrapper around pydoc.help (with a twist).
    
26. |  
    
27. |  Methods defined here:
    
28. |  
    
29. |  __call__(self, *args, **kwds)
    
30. |  
    
31. |  __repr__(self)
    
32. |  
    
33. |  ----------------------------------------------------------------------
    
34. |  Data descriptors defined here:
    
35. |  
    
36. |  __dict__
    
37. |      dictionary for instance variables (if defined)
    
38. |  
    
39. |  __weakref__
    
40. |      list of weak references to the object (if defined)
    
41. 
    
42. >>> dir(help)
    
43. ['__call__', '__class__', '__delattr__', '__dict__', '__dir__', '__doc__', '__eq__', '__format__', '__ge__', '__getattribute__', '__gt__', '__hash__', '__init__', '__le__', '__lt__', '__module__', '__ne__', '__new__', '__reduce__', '__reduce_ex__', '__repr__', '__setattr__', '__sizeof__', '__str__', '__subclasshook__', '__weakref__']
    
44. >>>

复制代码

小甲鱼

你暂时可以认为“type是显示对象的类型”而“dir是显示对象有什么属性和方法”。

admin.

小甲鱼 发表于 2014-7-7 17:58
你暂时可以认为“type是显示对象的类型”而“dir是显示对象有什么属性和方法”。

也就是说dir比较强大咯？

小甲鱼

admin. 发表于 2014-7-10 11:36
也就是说dir比较强大咯？

显示的是不同的东西丫。

admin.

小甲鱼 发表于 2014-7-10 14:59
显示的是不同的东西丫。

这么说是这样：
type(123)
然后回复的是int
dir(type)
显示的是内置什么来着？的用法

小甲鱼

admin. 发表于 2014-7-11 07:01
这么说是这样：
type(123)
然后回复的是int

>>> dir(type)
['__abstractmethods__', '__base__', '__bases__', '__basicsize__', '__call__', '__class__', '__delattr__', '__dict__', '__dictoffset__', '__dir__', '__doc__', '__eq__', '__flags__', '__format__', '__ge__', '__getattribute__', '__gt__', '__hash__', '__init__', '__instancecheck__', '__itemsize__', '__le__', '__lt__', '__module__', '__mro__', '__name__', '__ne__', '__new__', '__prepare__', '__qualname__', '__reduce__', '__reduce_ex__', '__repr__', '__setattr__', '__sizeof__', '__str__', '__subclasscheck__', '__subclasses__', '__subclasshook__', '__text_signature__', '__weakrefoffset__', 'mro']

显示的是type对象的属性和方法，学习到“类和对象”一章节你就清楚了。

anthoney

dir是目录表吧