code: def save(ar, fileName):
      # Used only when verbosity level > 10.
      from numpy import savetxt
  
      savetxt(fileName, ar)
  
file_path: catboost/contrib/python/scipy/py2/scipy/sparse/linalg/eigen/lobpcg/lobpcg.py
imports: from __future__ import division, print_function, absolute_import
  import numpy
  from numpy.testing import assert_allclose
  from scipy._lib.six import xrange
  from scipy.linalg import inv, eigh, cho_factor, cho_solve, cholesky
  from scipy.sparse.linalg import aslinearoperator, LinearOperator
  from scipy.sparse.sputils import bmat
label_desc: Use image node_id 1 for calling a global function with example usage: save(ar, fileName) without return types