派仙属性/方法の全て?

>>> class Foo:
...     def __init__(self):
...         self.a = "a"
...
>>> 
>>> f = Foo()
>>> f.a
'a'
>>> Foo.a
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
AttributeError: type object 'Foo' has no attribute 'a'
>>>

>>> class Foo:
...     a = "a"
...
>>>
>>> Foo.a  # 클래스로 속성 'a'에 접근
'a'
>>> f = Foo()  
>>> f.a    # 인스턴스(self)로 속성 'a'에 접근
'a'
>>>
>>> f.__dict__
{}
>>> Foo.__dict__
mappingproxy({'__module__': '__main__', 'a': 'a', '__dict__': <attribute '__dict__' of 'Foo' objects>, '__weakref__': <attribute '__weakref__' of 'Foo' objects>, '__doc__': None})
>>>

class IAmClass:
    def __init__(self):
    	self.a = 1
    
    @staticmethod
    def i_am_method(para1, para2): # 파라미터에 "self"가 없어요!
        pass

class IAmClass:
	count = 0
    def __init__(self):
        self.a = 1

	@classmethod
	def i_am_method(cls, para1, para2): # 파라미테어 cls가 있어요!!
        print(cls.count)