code: def test_DDM_zeros():
      ddmz = DDM.zeros((3, 4), QQ)
      assert list(ddmz) == [[QQ(0)] * 4] * 3
      assert ddmz.shape == (3, 4)
      assert ddmz.domain == QQ
  
imports: from sympy.testing.pytest import raises
  from sympy.external.gmpy import GROUND_TYPES
  from sympy.polys import ZZ, QQ
  from sympy.polys.matrices.ddm import DDM
  from sympy.polys.matrices.exceptions import DMShapeError, DMNonInvertibleMatrixError, DMDomainError, DMBadInputError
label_desc: Use image node_id 6 for calling a global function with example usage: test_DDM_zeros() without return types