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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def is_running(self) -> bool: """Specifies whether or not the thread is running"""

        return (
            self._has_started and
            self.is_alive() or
            self.completed_at is None or
            (datetime.utcnow() - self.completed_at).total_seconds() < 0.5
        )