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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 _set_repo_urls_from_channels(self, channels):
 """ Convert a channel into a normalized repo name including. Channels are assumed in normalized url form. """

        repos = []
        sys_platform = self._conda_api.get_platform()

        for channel in channels:
            url = '{0}/{1}/repodata.json.bz2'.format(channel, sys_platform)
            repos.append(url)

        return repos