code: def test_issue243_unnamed():
      df = pd.DataFrame(data=[[1, 2], [3, 4]])
      columns_before = df.columns
      _ = ProfileReport(
          df, progress_bar=False, pool_size=1
      ).description_set
      assert df.columns.tolist() == list(
          map(str, columns_before.tolist())
      )
  
imports: import pandas
  from ydata_profiling import ProfileReport
label_desc: Use image node_id 2 for calling a global function with example usage: test_issue243_unnamed() without return types