def iter_sys(self):
        """
        Iterate over sys_name, overall_sys, histo_sys.
        overall_sys or histo_sys may be None for any given sys_name.
        """
        names = self.sys_names()
        for name in names:
            osys = self.GetOverallSys(name)
            hsys = self.GetHistoSys(name)
            yield name, osys, hsys
def iter_sys ( self ) : names = self . sys_names ( ) for name in names : osys = self . GetOverallSys ( name ) hsys = self . GetHistoSys ( name ) yield name , osys , hsys
Iterate over sys_name, overall_sys, histo_sys.
        overall_sys or histo_sys may be None for any given sys_name.