python中定义了类之后,就会自动生成这些内置类属性.
可以通过dir(类名)打印查看.
class Person(object):
pass
print(dir(Person))
运行结果:
['__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__']
可以看到很多比较熟悉常用的:
1.delattr
2.dict
3.dir
4.doc
5.getattribute
6.init
7.module
8.new
9.setattr
10.getattr
11.str
