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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 sort_fn_list(fn_list):
 """Sort input filename list by datetime """

    dt_list = get_dt_list(fn_list)
    fn_list_sort = [fn for (dt,fn) in sorted(zip(dt_list,fn_list))]
    return fn_list_sort