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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def run(self, **kwargs):
 """Runs this command. :param kwargs: Any extra keyword arguments to pass along to `subprocess.Popen`. :returns: A handle to the running command. :rtype: :class:`subprocess.Popen` """

    env, kwargs = self._prepare_env(kwargs)
    logger.debug('Running command {}'.format(self.cmd))
    return subprocess.Popen(self.cmd, env=env, **kwargs)