python的class(类)中的object是什么意思?
写object和不写object有什么区别?
示例代码
class Test:
name = "libai"
class Test1(object):
name = 'libai'
if __name__ == '__main__':
test = Test()
print(dir(test))
test1 = Test1()
print(dir(test1))
输出结果
┌──(root㉿kali)-[~/]
└─# python2 test.py
['__doc__', '__module__', 'name']
['__class__', '__delattr__', '__dict__', '__doc__', '__format__', '__getattribute__', '__hash__', '__init__', '__module__', '__new__', '__reduce__', '__reduce_ex__', '__repr__', '__setattr__', '__sizeof__', '__str__', '__subclasshook__', '__weakref__', 'name']
┌──(root㉿kali)-[~/]
└─# python3 test.py
['__class__', '__delattr__', '__dict__', '__dir__', '__doc__', '__eq__', '__format__', '__ge__', '__getattribute__', '__gt__', '__hash__', '__init__', '__init_subclass__', '__le__', '__lt__', '__module__', '__ne__', '__new__', '__reduce__', '__reduce_ex__', '__repr__', '__setattr__', '__sizeof__', '__str__', '__subclasshook__', '__weakref__', 'name']
['__class__', '__delattr__', '__dict__', '__dir__', '__doc__', '__eq__', '__format__', '__ge__', '__getattribute__', '__gt__', '__hash__', '__init__', '__init_subclass__', '__le__', '__lt__', '__module__', '__ne__', '__new__', '__reduce__', '__reduce_ex__', '__repr__', '__setattr__', '__sizeof__', '__str__', '__subclasshook__', '__weakref__', 'name']
-
Test类很明显能够看出区别,不继承object对象,只拥有了__doc__ , __module__和自己定义的name变量, 也就是说这个类的命名空间只有三个对象可以操作.
-
Test1类继承了object对象,拥有了好多可操作对象,这些都是类中的高级特性。
在python2.x和python3.x中的输出结果不同,因为python3.x默认已经加了object,而python2.x并没有
标签:__,name,object,reduce,module,意思,class From: https://www.cnblogs.com/-Lucky-/p/17044970.html