# FAQ: Graph Search: Python - A Breadth of Fresh Neighbors

This community-built FAQ covers the “A Breadth of Fresh Neighbors” exercise from the lesson “Graph Search: Python”.

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## FAQs on the exercise A Breadth of Fresh Neighbors

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Hello Codecademy Team, I am finding it difficult to implement DFS and BFS algorithms.
I implemented it but I don’t know what my code does.
Can u please add video at the end of instructions. so that students like me will be able to grasp difficult concepts quickly.

7 Likes

Seconded.

Looking up BFS on other sites, theirs is far more simple and easy to follow. You simply populate and then depopulate the queue.

This algorithm uses a vertex and path list to build a path and a queue and I am very, very lost.

1 Like

Hello. It’d be nice if this exercise didn’t refuse to accept “if not neighbor in visited:” as opposed to “if neighbor not in visited:” when they are the exact same thing Especially since I’m 99% sure I did it that way on the previous one and it did accept it.

I’m not an expert, but I think there IS a difference between the two expressions. When you code not neighbor in visited, you may be saying: "When the value which isn’t None, (or when it’s None, I’m not sure), is in visited.

Totally agreed! I finished the section but don’t feel like I understood it completely although I went through it very slowly in 3 hours. I have to check via other sites to fully understand it.