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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 get(self, node, path):
 """ Return instance at `path`. An example module tree: A resolver using the `name` attribute: Relative paths: Node('/top/sub0/sub0sub0') Node('/top') Node('/top/sub0/sub0sub1') Node('/top/sub1') Node('/top/sub1') Traceback (most recent call last):
 anytree.resolver.ChildResolverError: Node('/top') has no child sub2. Children are: 'sub0', 'sub1'. Absolute paths: Node('/top') Node('/top/sub0') Traceback (most recent call last):
 anytree.resolver.ResolverError: root node missing. root is '/top'. Traceback (most recent call last):
 anytree.resolver.ResolverError: unknown root node '/bar'. root is '/top'. """

        node, parts = self.__start(node, path)
        for part in parts:
            if part == "..":
                node = node.parent
            elif part in ("", "."):
                pass
            else:
                node = self.__get(node, part)
        return node