code: def test_standard_nonsymmetric_starting_vector():
      params = NonSymmetricParams()
      sigma = None
      symmetric = False
      for k in [1, 2, 3, 4]:
          for d in params.complex_test_cases:
              for typ in "FD":
                  A = d["mat"]
                  n = A.shape[0]
                  v0 = random.rand(n).astype(typ)
                  eval_evec(symmetric, d, typ, k, "LM", v0, sigma)
  
imports: import threading
  import itertools
  import sys
  import platform
  import numpy
  from numpy.testing import assert_allclose, assert_array_almost_equal_nulp, assert_equal, assert_array_equal, suppress_warnings
  from pytest import raises
  import pytest
  from numpy import dot, conj, random
  from scipy.linalg import eig, eigh, hilbert, svd
  from scipy.sparse import csc_matrix, csr_matrix, isspmatrix, diags, rand
  from scipy.sparse.linalg import LinearOperator, aslinearoperator
  from scipy.sparse.linalg.eigen.arpack import eigs, eigsh, svds, ArpackNoConvergence, arpack
  from scipy._lib._gcutils import assert_deallocated, IS_PYPY
label_desc: Use image node_id 14 for calling a global function with example usage: test_standard_nonsymmetric_starting_vector() without return types