(cls)
Retrieves the registered charts.

        Yields:
            tuple: containing:
                unicode: the uniquely identifying name of the chart
                type: the chart class.
Retrieves the registered charts.
Retrieves the registered charts .
def get_charts(cls):
        """Retrieves the registered charts.

        Yields:
            tuple: containing:
                unicode: the uniquely identifying name of the chart
                type: the chart class.
        """
        for agg_name, agg_class in iter(cls._class_registry.items()):
            yield agg_name, agg_class
def get_charts ( cls ) : for agg_name , agg_class in iter ( cls . _class_registry . items ( ) ) : yield agg_name , agg_class