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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(path, code=None, params=None, **meta):
 """Check code with pycodestyle. :return list: List of errors. """

        parser = get_parser()
        for option in parser.option_list:
            if option.dest and option.dest in params:
                value = params[option.dest]
                if isinstance(value, str):
                    params[option.dest] = option.convert_value(option, value)

        for key in ["filename", "exclude", "select", "ignore"]:
            if key in params and isinstance(params[key], str):
                params[key] = _parse_multi_options(params[key])

        P8Style = StyleGuide(reporter=_PycodestyleReport, **params)
        buf = StringIO(code)
        return P8Style.input_file(path, lines=buf.readlines())