Change class attributes from generic method

Question

I have a class with many attributes and would like to be able to change these attributes from a generic method where you must pass the name of the attribute to be changed and the new value.

class Classe_com_muitos_atributos:
   def __init__(self, atr1, atr2, atr4 ...):
      self.atr1 = 5
      self.atr2 = 5
      self.atr3 = 5
      self.atr4 = 5
      #muitos atributos...

   def altera_atributo(self, var_com_o_nome_do_atributo, valor):
      self.var_com_nome_do_atributo = valor

The idea is that the method is executed as follows:

instancia.altera_atributo('atr2', 10)

My difficulty is that python searches in the class, an attribute with the name "var_com_o_nome_do_attribute" and I don’t know how to do it so that, instead, it looks in the class for the attribute that is contained in the variable, in this example, atr2.

I imagine it must be something simple, but I’m starting now and I’m not finding the solution.

Answer 1

Use the setattr. Your function altera_attribute will look like this:

def altera_atributo(self, var_com_o_nome_do_atributo, valor):
  setattr(self, var_com_o_nome_do_atributo, valor)

Answer 2

Maniero’s comment helped me with the resolution. The class remains a class but similar attributes have been transformed into a single dictionary (as class attribute). I don’t know if it’s good practice but it’s solved.