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def application(environ, start_response):

    get_data = []
    post_data = ''

    # stringifying the environment key, value pairs
    get_data = ['%s\t%s' % (key, value)
                     for key, value in environ.items()]
    get_data = '\n'.join(get_data)

    # in the HTTP request body which is passed by the WSGI server
    # in the file like wsgi.input environment variable.
    if environ['REQUEST_METHOD'] == 'POST':
        # the environment variable CONTENT_LENGTH may be empty or missing
        try:
            length = int(environ.get('CONTENT_LENGTH', 0))
        except (ValueError):
            length = 0

        request_body = environ['wsgi.input'].read(length)
        d = parse_qs(request_body)

        post_data = ''
        for key, value in d.items():
            for v in value:
                post_data += key + '\t' + v + '\n'

    output = get_data + '\n' + post_data