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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 get_pager_spec(self):
 """ Find the best pager settings for this command. If the user has specified overrides in the INI config file we prefer those. """

        self_config = self.get_config()
        pagercmd = self_config.get('pager')
        istty = self_config.getboolean('pager_istty')
        core_config = self.get_config('core')
        if pagercmd is None:
            pagercmd = core_config.get('pager')
        if istty is None:
            istty = core_config.get('pager_istty')
        return {
            "pagercmd": pagercmd,
            "istty": istty
        }