code: def worker():
      
      global n
      global use_segmenter_flag
      if request.method == 'POST':
          raw_data_json = request.form['classify']
          try:
              secret_uuid = request.form['secret']
          except:
              logging.info("No secret uuid given. Create one.")
              secret_uuid = str(uuid.uuid4())
  
          # Check recording
          try:
              json.loads(raw_data_json)
          except ValueError:
              return "Invalid JSON string: %s" % raw_data_json
  
          # Classify
          if use_segmenter_flag:
              strokelist = json.loads(raw_data_json)
              beam = utils.get_beam(secret_uuid)
  
              if beam is None:
                  beam = se.Beam()
                  for stroke in strokelist:
                      beam.add_stroke(stroke)
                  results = beam.get_results()
                  utils.store_beam(beam, secret_uuid)
              else:
                  stroke = strokelist[-1]
                  beam.add_stroke(stroke)
                  results = beam.get_results()
                  utils.store_beam(beam, secret_uuid)
          else:
              results = classify.classify_segmented_recording(raw_data_json)
          return get_json_result(results, n=n)
      else:
          # Page where the user can enter a recording
          return "Classification Worker (Version %s)" % hwrt.__version__
docs: Implement a worker for write-math.com.