code: def test_polygon_0d_input():
      # Bug reported in #4938: 0d input causes segfault.
      rr, cc = polygon(0, 1)
  
      assert rr.size == cc.size == 1
  
imports: import numpy
  from numpy.testing import assert_array_equal, assert_equal, assert_almost_equal
  import pytest
  from skimage._shared.testing import run_in_parallel
  from skimage._shared._dependency_checks import has_mpl
  from skimage.draw import set_color, line, line_aa, polygon, polygon_perimeter, disk, circle_perimeter, circle_perimeter_aa, ellipse, ellipse_perimeter, _bezier_segment, bezier_curve, rectangle, rectangle_perimeter
  from skimage.measure import regionprops
label_desc: Use image node_id 15 for calling a global function with example usage: test_polygon_0d_input() without return types