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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 urls(self):
 """ A dictionary of the urls to be mocked with this service and the handlers that should be called in their place """

        url_bases = self._url_module.url_bases
        unformatted_paths = self._url_module.url_paths

        urls = {}
        for url_base in url_bases:
            for url_path, handler in unformatted_paths.items():
                url = url_path.format(url_base)
                urls[url] = handler

        return urls