futures.py 文件源码

def offset(self, time_delta):
        """ Get the future chain for this root symbol with a given
        offset from the current as_of_date.

        Parameters
        ----------
        time_delta : datetime.timedelta or pandas.Timedelta or str
            The offset from the current as_of_date for the new chain.

        Returns
        -------
        FutureChain

        """
        return self.as_of(self.as_of_date + Timedelta(time_delta))


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