A route to list routes

bp.py

@bp.route('/routes', methods=['GET'])
def get_routes():
    """
    A route to show registered routes.

    :return:
    """
    rules = []
    for rule in current_app.url_map.iter_rules():
        methods = ','.join(sorted(rule.methods))
        rules.append((rule.endpoint, methods, str(rule)))

    ret_data = []
    sort_by_rule = operator.itemgetter(2)
    for endpoint, methods, rule in sorted(rules, key=sort_by_rule):
        route = '{:50s} {:25s} {}'.format(endpoint, methods, rule)
        ret_data.append(route)

    text = '{}\n'.format('\n'.join(ret_data))
    return text

To view the routes with "curl" (my routes will differ from yours) :)
curl 0/routes

aa.cluster_info                                    GET,HEAD,OPTIONS          /apiv2/aa/cluster_info
aa.get_dnsmasq_conf                                GET,HEAD,OPTIONS          /apiv2/aa/dnsmasq-conf
aa.gen_dnsmasq                                     GET,HEAD,OPTIONS          /apiv2/aa/gen-dnsmasq
aa.gen_host_vars                                   GET,HEAD,OPTIONS          /apiv2/aa/gen-host_vars
aa.host_vars                                       GET,HEAD,OPTIONS          /apiv2/aa/host_vars/<hostname>
aa.get_hosts_content                               GET,HEAD,OPTIONS          /apiv2/aa/hosts-content
aa.dyn_inventory                                   GET,HEAD,OPTIONS          /apiv2/aa/inventory