I want to find how to change a variable via a function that isn’t the one that the variable initiated in using the other function’s argument (to make it viable for many usages).

something along this lines:

class program():
   def __init__(self):
   ...

   def change_var(self, variable):
      variable = not(variable)  
 
   def first_fucn(self):
      some_variable = True
      print(some_variable) # True
      self.change_var(some_variable)
      print(some_variable) # False

the problem that it doesn’t only need to change the variable’s value, it need to store that information in the specific variable that I sent through the function.
then you might ask yourself, when didn’t I use return,
and the answer is it because in my program the function is called through an exterior event – so in short I can’t relay on this solution – I need to make the value and the assignment in the specialized function, and because that the range of variables is a lot, I need a solution that will work every time