a89aaff3cdcfb2c992ce18e8a0bdc6d95c6bd2e6,bt/core.py,StrategyBase,positions,#StrategyBase#,405

Before Change

        if self.root.stale:
            self.root.update(self.root.now, None)

        vals = pd.DataFrame({x.name: x.positions for x in self.members
                             if isinstance(x, SecurityBase)})
        self._positions = vals
        return vals

    def setup(self, universe):

After Change

            self.root.update(self.root.now, None)

        vals = pd.DataFrame()
        for x in self.members:
            if isinstance(x, SecurityBase):
                vals[x.name] = x.positions + (vals[x.name] if x.name in vals.columns else 0)

        self._positions = vals
        return vals

    def setup(self, universe):

Instances