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Код

import cgi
 
def application(environ, start_response):
    form = cgi.FieldStorage(fp=environ['wsgi.input'],
                            environ=environ,
                            keep_blank_values=1)
    write = start_response('200 OK', [('Content-type', 'text/html')])
    if form.getvalue('name'):
        write('<html><head><title>Hello!</title></head>\n')
        write('<body>\n')
        write('<h1>Hello %s!</h1>\n' % form['name'].value)
    else:
        write('<html><head><title>Who is there?</title></head>\n')
        write('<body>\n')
        write('<h1>Who is there?</h1>\n')
    write('<form action="%s" method="POST">\n' % environ['SCRIPT_NAME'])
    write('What is your name?<br>\n')
    write('<input type="text" name="name" value="%s"><br>\n'
          % cgi.escape(form.getvalue('name', ''), 1))
    write('<input type="submit" value="That is my name"></form>\n')
    write('</body></html>\n')
    return None