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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 check_output_input(*popenargs, **kwargs):
 """Run command with arguments and return its output as a byte string. If the exit code was non-zero it raises a CalledProcessError. The CalledProcessError object will have the return code in the returncode attribute and output in the output attribute. The arguments are the same as for the Popen constructor. Example: 'crw-rw-rw- 1 root root 1, 3 Oct 18 2007 /dev/null\n' The stdout argument is not allowed as it is used internally. To capture standard error in the result, use stderr=STDOUT. 'ls: non_existent_file: No such file or directory\n' There is an additional optional argument, "input", allowing you to pass a string to the subprocess's stdin. If you use this argument you may not also use the Popen constructor's "stdin" argument, as it too will be used internally. Example: b'when in the course of barman events\n' If universal_newlines=True is passed, the return value will be a string rather than bytes. """

    if 'stdout' in kwargs:
        raise ValueError('stdout argument not allowed, it will be overridden.')
    if 'input' in kwargs:
        if 'stdin' in kwargs:
            raise ValueError('stdin and input arguments may not both be used.')
        inputdata = kwargs['input']
        del kwargs['input']
        kwargs['stdin'] = PIPE
    else:
        inputdata = None
    process = Popen(*popenargs, stdout=PIPE, **kwargs)
    try:
        output, unused_err = process.communicate(inputdata)
    except:
        process.kill()
        process.wait()
        raise
    retcode = process.poll()
    if retcode:
        cmd = kwargs.get("args")
        if cmd is None:
            cmd = popenargs[0]
        raise CalledProcessError(retcode, cmd, output=output)
    return output