Flask CLI method to list routes

manage.py

# Based on http://flask.pocoo.org/snippets/117/
@manager.command
def list_routes():
    import urllib
    from flask import url_for

    output = []
    for rule in manager.app.url_map.iter_rules():
        print(rule.endpoint)
        # print(url_for(rule.endpoint))
        print(rule.arguments)
        print('-' * 80)

        options = {}
        for arg in rule.arguments:
            # options[arg] = "[{0}]".format(arg)
            options[arg] = 666

        methods = ','.join(rule.methods)
        try:
            url = url_for(rule.endpoint, **options)
        except ValueError as e:
            print('>>>')
            print(options)
            print('>>>')
            break
        line = urllib.unquote("{:50s} {:20s} {}".format(rule.endpoint, methods, url))
        output.append(line)
    
    for line in sorted(output):
        print line