code: def test_drop_duplicate_columns_for_third_duplicated_column(
      df_duplicated_columns,
  ):
      clean_df = df_duplicated_columns.drop_duplicate_columns(
          column_name="a", nth_index=2
      )
      expected_df = pd.DataFrame(
          {"a": range(10), "b": range(10), "A": range(10, 20)}
      ).clean_names(remove_special=True)
      assert clean_df.columns.to_list() == ["a", "b", "a"]
      assert_frame_equal(clean_df, expected_df)
  
file_path: pyjanitor/tests/functions/test_drop_duplicate_columns.py
imports: import pandas
  import pytest
  from pandas.testing import assert_frame_equal
  import janitor
label_desc: Use image node_id 3 for calling a global function with example usage: test_drop_duplicate_columns_for_third_duplicated_column(df_duplicated_columns) without return types