code: def test_tile_bbox_y0_at_south_pole():
      tms = cimgt.MapQuestOpenAerial()
  
      # Check the y0_at_north_pole keywords returns the appropriate bounds.
      assert_arr_almost(
          tms.tile_bbox(8, 6, 4, y0_at_north_pole=False),
          np.array(KNOWN_EXTENTS[(8, 9, 4)]).reshape([2, 2]),
      )
  
imports: import hashlib
  import os
  import types
  import warnings
  import numpy
  from numpy.testing import assert_array_almost_equal
  import pytest
  import shapely.geometry
  from cartopy import config
  import cartopy.crs
  import cartopy.io.img_tiles
label_desc: Use image node_id 4 for calling a global function with example usage: test_tile_bbox_y0_at_south_pole() without return types