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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def traverse(self):
 """Traverse the tree yielding the direction taken to a node, the co-ordinates of that node and the directions leading from the Node. Yields ------ Direction taken to reach a Node in the tree, the (x, y) co-ordinate of that Node and routes leading to children of the Node. """

        # A queue of (direction, node) to visit. The direction is the Links
        # entry which describes the direction in which we last moved to reach
        # the node (or None for the root).
        to_visit = deque([(None, self)])
        while to_visit:
            direction, node = to_visit.popleft()

            # Determine the set of directions we must travel to reach the
            # children
            out_directions = set()
            for child_direction, child in node.children:
                # Note that if the direction is unspecified, we simply
                # (silently) don't add a route for that child.
                if child_direction is not None:
                    out_directions.add(child_direction)

                # Search the next steps of the route too
                if isinstance(child, RoutingTree):
                    assert child_direction is not None
                    to_visit.append((child_direction, child))

            # Yield the information pertaining to this Node
            yield direction, node.chip, out_directions