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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_ext(args):
 """Run EXTERNAL program."""

    try:
        subprocess.check_call(args)
    except subprocess.CalledProcessError as exc:
        print(exc)
        print(exc.cmd)
        print(exc.returncode)
        print(exc.output)
        raise