human
I wrote the below code

    node_label = tokens[0]
    reln_preds = tokens[1:]
    def pattern_segment_pred(n, m=None, l=None):
        u'This    predicate    function    ignores    its    node    argument.'
        if ((l is None) or (node_label not in l)):
            raise TgrepException(u'node_label    ={0}    not    bound    in    pattern'.format(node_label))
        node = l[node_label]
        return all((pred(node, m, l) for pred in reln_preds))
    return pattern_segment_pred

What's a good function header?

Here's a good function header?
assistant
#Here's a good function header.

def _tgrep_segmented_pattern_action(_s, _l, tokens):