
CONFIG = {
    'mode': 'wsgi',
    'working_dir': '/path/to/my/app',
    'python': '/usr/bin/python',
    'args': (
        '--bind=127.0.0.1:8080',
        '--workers=16',
        '--timeout=60',
        'app.module',
    ),
}

def application(env, start_response):
  #  url = []
    start_response('200 OK', [('Content-Type', 'text/plain')])
    url = str(env[QUERY_STRING])+" test"
    return ["url"]


CONFIG = {
    'mode': 'wsgi',
    'working_dir': '/path/to/my/app',
    'python': '/usr/bin/python',
    'args': (
        '--bind=127.0.0.1:8080',
        '--workers=16',
        '--timeout=60',
        'app.module',
    ),
}

def application(env, start_response):
  #  url = []
    start_response('200 OK', [('Content-Type', 'text/plain')])
    # url = str(env[QUERY_STRING])+" test"
    url = str(env['QUERY_STRING'].split("&"))
    return ["url"]

Update hello.py