def fix_tree(tree, a_id_lookup, out):
    """
    get the names for sequences in the raxml tree
    """
    if check(out) is False and check(tree) is True:
        tree = open(tree).read()
        for line in open(a_id_lookup):
            id, name, header = line.strip().split('\t')
            tree = tree.replace(id+':', name+':')
        out_f = open(out, 'w')
        print(tree.strip(), file=out_f)
    return out
get the names for sequences in the raxml tree