How can i take python self class attributes in class's method?

Question

I started with Python's classes and I want to do something like that:

class First:
    def __init__(self):
        self.value = 1

    @classmethod
    def func(cls):
        print(self.value)


second = First()
second.func()

But i can't access self.value of the class. Can anybody help me?

when using `classmethod`, you want to pass `cls` not `self`. But class methods cannot and should not depend on the state of the instance. https://stackoverflow.com/questions/12179271/meaning-of-classmethod-and-staticmethod-for-beginner — Buckeye14Guy, Feb 17 '20 at 17:22
`@classmethod`s take `cls`, which is the class. Remove the decorator if you want to take `self` which is the object instance. — ruohola, Feb 17 '20 at 17:26

Ranga · Answer 1 · 2020-02-17T18:28:38.417

0

If you just want to create a function in your class and use self parameters just do that :

class First:
    def __init__(self):
        self.value = 1

    def func(self):
        print(self.value)


second = First()
second.func()

edited Feb 17 '20 at 18:28

answered Feb 17 '20 at 17:27

Ranga

1
2

score 0 · Accepted Answer · answered Feb 17 '20 at 17:29

0

IIUC then your class should look like the following:

class First:
    value = 1

    @classmethod
    def func(cls):
        print(cls.value)

answered Feb 17 '20 at 17:29

gold_cy

13,648
3
23
45

score 0 · Answer 3 · answered Feb 17 '20 at 17:30

0

Is @classmothod necessary?
If it is eliminated, the class works well.

class First:
    def __init__(self):
        self.value = 1

    def func(self):
        print(self.value)

second = First()
second.func()

answered Feb 17 '20 at 17:30

Kimpro

81
2
11

How can i take python self class attributes in class's method?

3 Answers3