Clarifications about condition and logic : "If not" with the use of "or" and "and"

[sculpteur]

I have a little question about this line of code I have just written :

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menu:
        "Look around" if not obj_ducktape in inventory1.items or obj_ducktape in inventory2.items:
            jump my_label

The goal of this condition is to be sure the player don't have the item.
So I check the item IS NOT in inventory 1.
And I also check the item IS NOT in inventory 2.

But I am not sure about the second part of the line.
"If not obj_ducktape in inventory1.items" mean "obj_ducktape in inventory1.items == False"
but is it working for the secondary assertion ?
I want to be sure this line is the same thing than :
obj_ducktape in inventory1.items == False and obj_ducktape in inventory2.items == False

Could you give me you opinion on this please ?

[Remix]

If inventory1.items is a list (and inventory2.items) you could:

"Look around" if not obj_ducktape in inventory1.items + inventory2.items:

Alternatively, use AND and explicitly define each condition:

"Look around" if not obj_ducktape in inventory1.items and not obj_ducktape in inventory2.items:
or
"Look around" if all( [ not obj_ducktape in inventory1.items, not obj_ducktape in inventory2.items ] ):

[Ocelot]

Your condition is parsed as

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(not (obj_ducktape in inventory1.items)) or (obj_ducktape in inventory2.items)

in has highest priority, followed by not and ending with or. You can follow Remix suggestion, or use not in operator + and:

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obj_ducktape not in inventory1.items and obj_ducktape not in inventory2.items

[sculpteur]

I am not one hundred percent sure it's a list.
I have define it like this :

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python:
      inventory1 = Inventory1()
      inventory2 = Inventory2()

And after I use it like this :

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init -1 python:
    import renpy.store as store
    import renpy.exports as renpy # Needed so Ren'Py properly handles rollback with classes
    from operator import attrgetter # Needed this for sorting items

    item = None
    class Item(store.object):
        def __init__(self, name, image=""):
            self.name = name
            self.image=image # image file to use for this item
        def use(self):
            
            #USE ITEM which is in the INVENTORY
            if self.name == "Tools" and obj_tool_is_dropable and obj_tool in inventory1.items:
                inventory2.add(self)
                inventory1.drop(self)

or like this :

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        $ inventory1.add(obj_teddybear)

But anyway, thank a lot because I am almost sure that the line you give me will work.
My favorite is this one :

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"Look around" if not obj_ducktape in inventory1.items and not obj_ducktape in inventory2.items:

So thank you really much