🔒 VSCode not recognizing attribute?

[supple mulch]

Its not recognizing the next_node on current.next_node

[tall sapphire]

@supple mulch

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[austere zodiac]

Since you only ever assign None to self.head, it probably inferred that the type of self.head is None. Try changing the initial assignment to:

self.head: Node | None = None

Also, you should get rid of the assignments at the top of the Node class. That is giving the class itself data and next_node attributes.

@supple mulch

Actually, problem 2 might be the real problem. Node instances do not have a next_node attribute.

I'd try both fixes and see which helps.

[supple mulch]

This fixed it, thanks, so im a little confusd as to what this is actually doing. im trying to learn how classes work

[austere zodiac]

The first issue isn't really a class problem. Since you only ever assigned None to self.head and didn't specify the type of self.head, VSCode had to guess the type. Since you did self.head = None, it made the reasonable guess that the type of self.head is None.

Later, you do current = self.head, which means that current is likely the same type as self.head, so if self.head has the type None, so does current.

Then later you do current.next_node, which doesn't make sense if current is None, since None doesn't have an attribute next_node.

: Node | None says "The type of this is either a Node, or None".

[supple mulch]

I see thanks, this stuff is kind of confusing to wrap my head around, apprecaite the help

[austere zodiac]

Types can be a bit of a pain and hard to wrap your head around, but they also help catch mistakes. They're well worth the effort to learn.

And you're welcome.

If you really want to learn static typing, learn a language like Haskell or Typescript that have deep type systems.

Python's implementation of typing is pretty weak, and is really only used by the editor.

[tall sapphire]

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