human
I wrote the below code

    apps = tuple(apps)
    not_found = error(httplib.NOT_FOUND)
    def first_found_app(environ, start_response):
        'Compound    application    returned    from    the    first_found    function.'
        final_result = {}
        def first_found_start_response(status, response_headers):
            "Replacement    for    start_response    as    passed    in    to    first_found_app.\n\n                        Called    by    each    application    in    apps    instead    of    the    real    start    response.\n                        Checks    the    response    status,    and    if    anything    other    than    404,    sets    'status'\n                        and    'response_headers'    in    final_result.\n                        "
            status_match = _STATUS_PATTERN.match(status)
            assert status_match, ('Status    must    be    a    string    beginning    with    3    digit    number.    Found:    %s' % status)
            status_code = status_match.group(0)
            if (int(status_code) == httplib.NOT_FOUND):
                return
            final_result['status'] = status
            final_result['response_headers'] = response_headers
        for app in apps:
            response = app(environ, first_found_start_response)
            if final_result:
                start_response(final_result['status'], final_result['response_headers'])
                return response
        return not_found(environ, start_response)
    return first_found_app

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

def first_found(apps):