code: def _check_cols_no_na(df, col_names):
      col_names = _to_list(col_names, name=None)
      for col_name in col_names:
          _check_col_no_na(df, col_name)
  
label_desc: Use image node_id 5 for calling a global function with example usage: _check_cols_no_na(df, col_names) without return types