code: def test_single_value_returned(self):
      payload = """
              {
                  "data": { "_arg1": 2, "_arg2": 40 },
                  "script":
                  "return _arg1 + _arg2"
              }
              """
      headers = {
          "Content-Type": "application/json",
          "Content-Encoding": "gzip",
      }
  
      url = self._get_url() + "/evaluate"
      response = requests.request(
          "POST",
          url,
          data=gzip.compress(payload.encode("utf-8")),
          headers=headers,
      )
      result = json.loads(response.text)
  
      self.assertEqual(200, response.status_code)
      self.assertEqual(42, result)
  
file_path: TabPy/tests/integration/test_gzip.py
imports: from .None import integ_test_base
  import json
  import gzip
  import os
  import requests
label_desc: Use image node_id 2 for calling the TestEvaluate obj's underlying member method code with example usage: obj.test_single_value_returned() without return types