Class variable / instance variable

[ifigazsi]

I have a class variable, but I want to change this at instance level, without changing the original class variable, how can i make it

This looks like wrong design - if you want and are going to change it at instance level why it should be class attributee - it should be instance attribute.

Ok, so it seems like wrong design. (first attempt in OOP ) (i tried to update it)

I want to create a initial_data which is accessible by all instances, to start to work with.
Then after a lot of iterations resume to the original (initial) data.

class Something:

    def __init__(self):
        self.saved_data = [2,3,4,5]
        self.data_to_work_with = self.saved_data
        self.data_to_work_with2 = [x for x in self.saved_data]

x = Something()

print(x.data_to_work_with is x.saved_data)
print(x.data_to_work_with2 is x.saved_data)