Naming a method which modifies data in place in Python

from dataclasses import dataclass
from utils import gen_x

@dataclass
class Data:
    x: str
    
    def foo():
        self.x = gen_x()

d = Data('bar')
d.foo()

I need to modify x in place from usability reasons, but I don’t know how to clearly indicate that in name of method which performs that modification (named here: foo).

Rejected names:

• generate_x – means, that x is generated and returned, not substituted in instance
• substitute_x – better than previous, but looks strange

>Solution :

update_x or replace_x – These two names would be better if you want to modify the x attribute in place