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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 main():
 """Command-line entry point for running the view server."""

    import getopt
    from . import __version__ as VERSION

    try:
        option_list, argument_list = getopt.gnu_getopt(
            sys.argv[1:], 'h',
            ['version', 'help', 'json-module=', 'debug', 'log-file='])

        message = None
        for option, value in option_list:
            if option in ('--version'):
                message = _VERSION % dict(name=os.path.basename(sys.argv[0]),
                                      version=VERSION)
            elif option in ('-h', '--help'):
                message = _HELP % dict(name=os.path.basename(sys.argv[0]))
            elif option in ('--json-module'):
                json.use(module=value)
            elif option in ('--debug'):
                log.setLevel(logging.DEBUG)
            elif option in ('--log-file'):
                if value == '-':
                    handler = logging.StreamHandler(sys.stderr)
                    handler.setFormatter(logging.Formatter(
                        ' -> [%(levelname)s] %(message)s'))
                else:
                    handler = logging.FileHandler(value)
                    handler.setFormatter(logging.Formatter(
                        '[%(asctime)s] [%(levelname)s] %(message)s'))
                log.addHandler(handler)
        if message:
            sys.stdout.write(message)
            sys.stdout.flush()
            sys.exit(0)

    except getopt.GetoptError, error:
        message = '%s\n\nTry `%s --help` for more information.\n' % (
            str(error), os.path.basename(sys.argv[0]))
        sys.stderr.write(message)
        sys.stderr.flush()
        sys.exit(1)

    sys.exit(run())