我应该使用类来定义将使用相同参数的函数，还是应该使用全局变量？

Question

First of all, apologies if the question has already been answered somewhere, I have not managed to find an answer to my question, but I am fairly new to the use of stackoverflow.

I am trying to optimize some code, and I would like to do it the "right" way. I have a function A that does pre-processing and defines some variables that will be used by another function B. Now, I cannot define those variables directly in B because I want to avoid repeating the processing step. I could pass on the variables as arguments to the function B, but to simplify this I would like to avoid this.

One option would of course be to use global variables, but I read in multiple places that this is a bad habit, one of the reason being that it breaks encapsulation.

An alternative that I could see would be to define a class (some sort of a master class) in which I put all the functions to use and pass the "self" for accessing the variables. Does anyone have some arguments against this? Is this also a bad approach for some reason?

Thank you in advance to anyone who has some element of response !

Answer 1

Using self is the best approach. I guess your case is something similar to this.

class DemoClass:

    def __init__(self, name, age):
        self.name = name
        self.age = age

    def fun1(self): 
        print(self.name)

    def fun2(self):
        print(self.age)

Here you can access the variables as self (instance of class) is passed.