获取对象信息之内置函数dir()

获取对象信息之内置函数dir()

"""
对于制定的类对象或实例对象，可以调用内置函数dir()获取其所有可以访问的属性和方法(包括
从父类中继承的属性和方法)的列表
类对象与实例对象的结果是有区别的，类对象的结果不包括实例属性
"""
class MyClass(object):
    ca = "ca"

    def __init__(self):
        self.ia = "ia"

    def im(self):
        pass

    @classmethod
    def cm(cls):
        pass

    @staticmethod
    def sm():
        pass

print(dir(MyClass))
print(dir(MyClass()))
"""
['__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__', 'ca', 'cm', 'im', 'sm']
['__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__', 'ca', 'cm', 'ia', 'im', 'sm']
"""