code: def test_pandas():
      # pandas encoderizer example
      X = [
          "text encoding is fun",
          "this is a text encoding example",
          "hopefully it works and we'll have passed the test",
      ]
      df = pd.DataFrame(
          {
              "text": X * 4,
              "constant_int": [np.nan, 2, 2] * 4,
              "constant_str": ["test", "test", "test"] * 4,
              "constant_null": [None, "test", np.nan] * 4,
              "numbers": [0.123, None, 0.535] * 4,
              "dicts": [{"a": 4}, None, {"b": 1}] * 4,
          }
      )
      encoderizer = encoder.Encoderizer(size="medium")
      X_t = encoderizer.fit_transform(df)
      assert X_t.shape == (12, 180)
  
label_desc: Use image node_id 3 for calling a global function with example usage: test_pandas() without return types