code: def test_verify_cases():
      for a in verify_cases:
          verify_polar(a)
  
file_path: catboost/contrib/python/scipy/py3/scipy/linalg/tests/test_decomp_polar.py
imports: import numpy
  from numpy.linalg import norm
  from numpy.testing import assert_, assert_allclose, assert_equal
  from scipy.linalg import polar, eigh
label_desc: Use image node_id 4 for calling a global function with example usage: test_verify_cases() without return types