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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(log_level='INFO', profiling=_default_profiling):
 """ Convenience decorator primarily useful for writing discardable test scripts. In the master process, when `func` is defined in the :mod:`__main__` module, arranges for `func(router)` to be invoked immediately, with :py:class:`mitogen.master.Router` construction and destruction handled just as in :py:func:`mitogen.utils.run_with_router`. In slaves, this function does nothing. :param str log_level: Logging package level to configure via :py:func:`mitogen.utils.log_to_file`. :param bool profiling: If :py:data:`True`, equivalent to setting :py:attr:`mitogen.master.Router.profiling` prior to router construction. This causes ``/tmp`` files to be created everywhere at the end of a successful run with :py:mod:`cProfile` output for every thread. Example: :: import mitogen import requests def get_url(url):
 return requests.get(url).text @mitogen.main() def main(router):
 z = router.ssh(hostname='k3') print(z.call(get_url, 'https://example.org/'))))) """


    def wrapper(func):
        if func.__module__ != '__main__':
            return func
        import mitogen.parent
        import mitogen.utils
        if profiling:
            mitogen.core.enable_profiling()
            mitogen.master.Router.profiling = profiling
        utils.log_to_file(level=log_level)
        return mitogen.core._profile_hook(
            'app.main',
            utils.run_with_router,
            func,
        )
    return wrapper