_dataframe_data_support.py 文件源码

def __init__(self, panel, context=None, side="L", frequency='D'):
        """
        Create a PannelDataSupport with a pandas.Panel object.
        Panel's inner data can be accessed using method history() and current()
        context is a optional parameters, to

        Args:
            panel(pandas.Panel): Panel where real data stored in
            context: default end bar number refer to context.real_bar_num
            side(str): "L" or "R", "L" means bar's datetime refer to it's start time
                "R" means bar's datetime refer to it's end time
        """
        super(PanelDataSupport, self).__init__()
        self._panel = panel
        self._frequency = frequency
        self._others = {}
        self._date_index = self._panel.iloc[0].index
        self._side = side
        self._context = context