code: def test_mem_masked_where(self):
      # Ticket #62
      from numpy.ma import masked_where, MaskType
  
      a = np.zeros((1, 1))
      b = np.zeros(a.shape, MaskType)
      c = masked_where(b, a)
      a - c
  
file_path: numpy/numpy/ma/tests/test_regression.py
imports: import numpy
  from numpy.testing import assert_, assert_array_equal, assert_allclose, suppress_warnings
label_desc: Use image node_id 3 for calling the TestRegression obj's underlying member method code with example usage: obj.test_mem_masked_where() without return types