def convert_simple_walk(graph, simple_walk):
return [<EOL>graph.nodes[node][FUNCTION]<EOL>for node in simple_walk<EOL>]<EOL>
Converts a walk into a sequence of BEL functions

    :param pybel.BELGraph graph: A BEL graph
    :param iter[tuple] simple_walk: An iterable of BEL nodes
    :return: A list of BEL functions of the walk
    :rtype: list[str]