Ren'Py AttributeError and I'm not sure what went wrong

[iSleepZZZ]

Hi guys, I'm not sure what did I do wrong. I defined a class object, and when I put it on a screen with:

screen display:
    text "[item.name]"
    text "[item.image]"

They show up on the screen just fine. However, when I put:

screen display:
    imagebutton:
    idle "images/[item.image].png"

It crashes the game and say [AttributeError("type object 'item' has no attribute 'image'")]
Did I miss something?

Here is the full code:

Spoiler: Full code

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[Winterfire]

I escaped Count Morado's hut and quickly switched to my alt account to let you know that this answer has been answered by the french a few years ago: https://f95zone.to/threads/can-someone-help-me-with-inventory-solved.147164/post-10010237

 

[anne O'nymous]

[...] to let you know that this answer has been answered by the french a few years ago: https://f95zone.to/threads/can-someone-help-me-with-inventory-solved.147164/post-10010237

And to extend my then answer, the error happen because idle "images/[item.image].png" is computed when the screen is created, early in the game life, while text "[item.image]" is computed each time the screen is displayed.

Solving the issue OP have is relatively easy:

init python:
    class item:
        def __init__(self, name, image):
            self.name = name
            self.image = "images/{}.png".format( image )
            self.imageName = image  # The code shown include its display as text, so...

screen backpack_display:
    hbox:
        xalign 0.5
        yalign 0.5
        for item in backpack:
            frame:
                vbox:
                    spacing 20
                    text "[item.name]"
                    text "[item.imageName]"
                    imagebutton:
                        idle item.image

 

[iSleepZZZ]

Thanks again for answering the question. I followed your suggestion and it's working fine now.