old_contents: import pytest
  
  from compas.utilities import binomial
  
  
  @pytest.mark.parametrize(("n", "k", "result"),
  	[
  	pytest.param(3, 1, 3),
  	pytest.param(21, 10, 352716),
  	pytest.param(10, 0, 1),
  	pytest.param(0, 0, 1),
  	pytest.param(1, 2, 0, marks=pytest.mark.xfail(raises=ValueError)),
  	pytest.param(2, -1, 0, marks=pytest.mark.xfail(raises=ValueError)),
  	]
  )
  
  
  def test_binomial(n, k, result):
      assert binomial(n, k) == pytest.approx(result)
  
new_contents: import pytest
  
  from compas.utilities import binomial
  
  
  @pytest.mark.parametrize(("n", "k", "result"),
  	[
  	pytest.param(3, 1, 3),
  	pytest.param(21, 10, 352716),
  	pytest.param(10, 0, 1),
  	pytest.param(0, 0, 1),
  	pytest.param(1, 2, 0, marks=pytest.mark.xfail(raises=ValueError)),
  	pytest.param(2, -1, 0, marks=pytest.mark.xfail(raises=ValueError)),
  	]
  )
  def test_binomial(n, k, result):
      assert binomial(n, k) == pytest.approx(result)
  
subject: remove blanks