old_contents: import subprocess
  
  
  def check_output(*popenargs, **kwargs):
      r"""Run command with arguments and return its output as a byte string.
      Backported from Python 2.7 as it's implemented as pure python on stdlib.
      >>> check_output(['/usr/bin/python', '--version'])
      Python 2.6.2
      Added extra KeyboardInterrupt handling
      """
      try:
          process = subprocess.Popen(stdout=subprocess.PIPE, *popenargs, **kwargs)
          output, unused_err = process.communicate()
          retcode = process.poll()
          if retcode:
              cmd = kwargs.get("args")
              if cmd is None:
                  cmd = popenargs[0]
              error = subprocess.CalledProcessError(retcode, cmd)
              error.output = output
              raise error
          return output
      except KeyboardInterrupt:
              process.terminate()
              return None
  
new_contents: import subprocess
  
  
  def check_output(*popenargs, **kwargs):
      r"""Run command with arguments and return its output as a byte string.
      Backported from Python 2.7 as it's implemented as pure python on stdlib.
      >>> check_output(['/usr/bin/python', '--version'])
      Python 2.6.2
      Added extra KeyboardInterrupt handling
      """
      try:
          process = subprocess.Popen(stdout=subprocess.PIPE, *popenargs, **kwargs)
          output, unused_err = process.communicate()
          retcode = process.poll()
          if retcode:
              cmd = kwargs.get("args")
              if cmd is None:
                  cmd = popenargs[0]
              error = subprocess.CalledProcessError(retcode, cmd)
              error.output = output
              raise error
          return output
      except KeyboardInterrupt:
          process.terminate()
          raise
  
subject: Update wrapper_utils.py