def app(environ, start_response):
    status = '200 OK'
    headers = [('Content-Type', 'text/plain')]
    result = ''
    for str in environ['QUERY_STRING'].split('&'):
        result += str + '\n'
    body = 'Hello, world!'
    start_response(status, headers)
    return [result]

5c51d34ded811d8ac2cee0c0393bcf67f94aff7f
<mask token>

def app(environ, start_response):
    status = '200 OK'
    headers = [('Content-Type', 'text/plain')]
    result = ''
    for str in environ['QUERY_STRING'].split('&'):
        result += str + '\n'
    body = 'Hello, world!'
    start_response(status, headers)
    return [result]
