code: def polynomial_matrix(x, powers, out):
      """Evaluate monomials, with exponents from `powers`, at `x`."""
      for i in range(x.shape[0]):
          for j in range(powers.shape[0]):
              out[i, j] = np.prod(x[i] ** powers[j])
  
file_path: pythran/pythran/tests/scipy/_rbfinterp.py
imports: import numpy
label_desc: Use image node_id 12 for calling a global function with example usage: polynomial_matrix(x, powers, out) without return types