class First_Name():
    print("Cookies")
class Last_Name(object):
    print("Lee")

x=First_Name()
y=Last_Name()
print(dir(x))
print(dir(y))

最后的输出结果为：

(4Project) PS D:\PythonVirtualEnv\PythonVirtualEnv_391\Scripts> & d:/PythonVirtualEnv/PythonVirtualEnv_391/4Project/Scripts/python.exe d:/PythonVirtualEnv/PythonVirtualEnv_391/tmp.py
Cookies
Lee
['__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__']
['__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__']
(4Project) PS D:\PythonVirtualEnv\PythonVirtualEnv_391\Scripts> python -V
Python 3.9.1
(4Project) PS D:\PythonVirtualEnv\PythonVirtualEnv_391\Scripts> 

如果是在Python2.7.9版本中：

PS D:\PythonVirtualEnv\Python_279> python.exe .\tmp.py
Cookies
Lee
['__doc__', '__module__']
['__class__', '__delattr__', '__dict__', '__doc__', '__format__', '__getattribute__', '__hash__', '__init__', '__module__', '__new__', '__reduce__', '__reduce_ex__', '__repr__', '__setattr__', '__sizeof__', '__str__', '__subclasshook__', '__weakref__']
2.7.9 (default, Dec 10 2014, 12:24:55) [MSC v.1500 32 bit (Intel)]

不继承object对象，只拥有了__doc__ , __module__ 和自己定义的变量，就是说这个类的命名空间只有三个对象可以操作；

继承object对象，拥有了很多可操作对象，这些都是类中的高级特性；

python3 中已经默认加载了object