old_contents: from __future__ import division, absolute_import, print_function
  
  import re
  
  import numpy as np
  from numpy.testing import assert_, run_module_suite
  
  
  def test_valid_numpy_version():
      # Verify that the numpy version is a valid one (no .post suffix or other
      # nonsense).  See gh-6431 for an issue caused by an invalid version.
      version_pattern = "^[0-9]+\.[0-9]+\.[0-9]+(|a[0-9]|b[0-9]|rc[0-9])"
      dev_suffix = "+(\.dev0\+([0-9a-f]{7}|Unknown))"
      if np.version.release:
          res = re.match(version_pattern + "?$", np.__version__)
      else:
          res = re.match(version_pattern + dev_suffix + "?$", np.__version__)
  
      assert_(res is not None, np.__version__)
  
  
  if __name__ == "__main__":
      run_module_suite()
  
new_contents: from __future__ import division, absolute_import, print_function
  
  import re
  
  import numpy as np
  from numpy.testing import assert_, run_module_suite
  
  
  def test_valid_numpy_version():
      # Verify that the numpy version is a valid one (no .post suffix or other
      # nonsense).  See gh-6431 for an issue caused by an invalid version.
      version_pattern = r"^[0-9]+\.[0-9]+\.[0-9]+(|a[0-9]|b[0-9]|rc[0-9])"
      dev_suffix = r"(\.dev0\+([0-9a-f]{7}|Unknown))"
      if np.version.release:
          res = re.match(version_pattern, np.__version__)
      else:
          res = re.match(version_pattern + dev_suffix, np.__version__)
  
      assert_(res is not None, np.__version__)
  
  
  if __name__ == "__main__":
      run_module_suite()
  
subject: fix issues with test for correctness of numpy version string.