code: def test_gh_2466():
      row = np.array([0, 0])
      col = np.array([0, 1])
      val = np.array([1, -1])
      A = scipy.sparse.coo_matrix((val, (row, col)), shape=(1, 2))
      b = np.asarray([4])
      lsqr(A, b)
  
file_path: scipy/scipy/sparse/linalg/_isolve/tests/test_lsqr.py
imports: import numpy
  from numpy.testing import assert_allclose, assert_array_equal, assert_equal
  import pytest
  import scipy.sparse
  import scipy.sparse.linalg
  from scipy.sparse.linalg import lsqr
label_desc: Use image node_id 2 for calling a global function with example usage: test_gh_2466() without return types