'Init the history option.'

def _init_history(self):

    self.reset_history_tag = False
    self.graph_tag = False
    if self.args.export_graph:
        logger.info(('Export    graphs    function    enabled    with    output    path    %s' % self.args.path_graph))
        from glances.exports.graph import GlancesGraph
        self.glances_graph = GlancesGraph(self.args.path_graph)
        if (not self.glances_graph.graph_enabled()):
            self.args.export_graph = False
            logger.error('Export    graphs    disabled')
