What am I doing wrong (Pythonista name error)?

Question

I'm using Pythonista for python and am trying to use Scene to program my game. I am completely new to this. I use colortaleTitle as the name of a SpriteNode, but keep getting a name error stating that colortaleTitle is undefined. I am following the intro to the Scene documentation almost exactly (I think).

So far, I have tried renaming this, but still have not gotten the expected results.

from scene import *
import time
import sound

class ColorTaleMenu (Scene):
    def setup(self):
        self.background_color = 'black'
        self.colortaleTitle = SpriteNode('colortaleTitle.png')
        self.colortaleTitle.position = colortaleTitle.size / 2
        Scene.add_child(self.colortaleTitle)

I want it to show colortaleTitle.png in the center of the screen.

It changes the background_color to black, but never puts in the image.

Answer 1

Your error is on this line:

self.colortaleTitle.position = colortaleTitle.size / 2

On the right hand side of the assignment, you're trying to access colortaleTitle, but that's not defined. Instead, you earlier defined self.colortaleTitle, which is not the same thing (it's an attribute, not a local variable). Try adding a self. prefix to the variable name and it should fix the issue.