given a list of strings in python

Question

I have the following code in python:

class CreateMap:
   def changeme(listOne, lisrTwo, listThree, listFour, listfive):

if __name__ == "__main__":
        createMap = CreateMap()
        createMap.changeme(["oneItem", "secondItem"],[],[],[],[])

It gives me the following error:

TypeError: changeme() takes exactly 5 arguments (6 given)

As I understand, it recognize the first list as two list. How can I avoid it?

Answer 1

Define your function as

def changeme(self,listOne, lisrTwo, listThree, listFour, listfive):

This will make the function accessible to instance variables outside the class

Answer 2

It's not recognizing the first list as two lists. You must use self as the first argument in your function, because explicit is better than implicit . The reasoning has been given here in detail. I'll quote some here.

First, it's more obvious that you are using a method or instance attribute instead of a local variable. Reading self.x or self.meth() makes it absolutely clear that an instance variable or method is used even if you don't know the class definition by heart.