code: def test_zeta():
      assert_allclose(sc.zeta(2, 2), np.pi**2 / 6 - 1, rtol=1e-12)
  
file_path: scipy/scipy/special/tests/test_zeta.py
imports: import scipy.special
  import numpy
  from numpy.testing import assert_equal, assert_allclose
label_desc: Use image node_id 1 for calling a global function with example usage: test_zeta() without return types