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''' LOGGED_IN = '''Hello {username}!
''' app = Microdot() set_session_secret_key('top-secret') Response.default_content_type = 'text/html' @app.get('/') @app.post('/') @with_session def index(req, session): username = session.get('username') if req.method == 'POST': username = req.form.get('username') update_session(req, {'username': username}) return redirect('/') if username is None: return BASE_TEMPLATE.format(content=LOGGED_OUT) else: return BASE_TEMPLATE.format(content=LOGGED_IN.format( username=username)) @app.post('/logout') def logout(req): delete_session(req) return redirect('/') if __name__ == '__main__': app.run()