code: def test_evaluate_f_string(self):
      code = "text = f'This is x: {x}.'"
      state = {"x": 3}
      result = evaluate(code, {}, state=state)
      # evaluate returns the value of the last assignment.
      assert result == "This is x: 3."
      self.assertDictEqual(state, {"x": 3, "text": "This is x: 3."})
  
file_path: transformers/tests/tools/test_python_interpreter.py
imports: import unittest
  from transformers.testing_utils import CaptureStdout
  from transformers.tools.python_interpreter import evaluate
label_desc: Use image node_id 6 for calling the PythonInterpreterTester obj's underlying member method code with example usage: obj.test_evaluate_f_string() without return types