code: def test_ddot():
      x = np.random.rand(n)
      y = np.random.rand(n)
      assert_almost_equal(np.dot(x, y), blas_ddot(x, y))
  
file_path: nipy/nipy/labs/bindings/tests/test_blas1.py
imports: import numpy
  from numpy.testing import assert_almost_equal
  from ..None import blas_dasum, blas_daxpy, blas_ddot, blas_dnrm2, blas_dscal
label_desc: Use image node_id 3 for calling a global function with example usage: test_ddot() without return types