code: def test_multilabel_list_of_len_1():
      df = pd.DataFrame({"y": [1], "x": [2]})
      conv1 = DFtoVW(
          df=df, label=MultiLabel(["y"]), features=Feature("x")
      )
      conv2 = DFtoVW(
          df=df, label=MultiLabel("y"), features=Feature("x")
      )
      assert conv1.convert_df()[0] == conv2.convert_df()[0]
  
imports: import pytest
  import pandas
  from vowpalwabbit.dftovw import ContextualbanditLabel, DFtoVW, Feature, MulticlassLabel, MultiLabel, Namespace, SimpleLabel
label_desc: Use image node_id 26 for calling a global function with example usage: test_multilabel_list_of_len_1() without return types