@property
    def trend(self):
        # If present, trend is always the second component of the state vector
        # (because level is always present if trend is present)
        out = None
        spec = self.specification
        if spec.trend:
            offset = int(spec.level)
            out = Bunch(filtered=self.filtered_state[offset],
                        filtered_cov=self.filtered_state_cov[offset, offset],
                        smoothed=None, smoothed_cov=None,
                        offset=offset)
            if self.smoothed_state is not None:
                out.smoothed = self.smoothed_state[offset]
            if self.smoothed_state_cov is not None:
                out.smoothed_cov = self.smoothed_state_cov[offset, offset]
        return out
Indicate that daemonization has happened and change the PID so that the
dataset/ETHPy150Open statsmodels/statsmodels/statsmodels/tsa/statespace/structural.py/UnobservedComponentsResults.trend--crossover with--dataset/ETHPy150Open twisted/twisted/twisted/test/test_twistd.py/UnixApplicationRunnerSetupEnvironmentTests.daemonize