from time import time


class Timer:
    """Simple class for tracking whether or not a given amount of time has
    elapsed since the object was created.
    """

    def __init__(self, timeout_seconds):
        self.expire_at = time() + timeout_seconds

    def is_expired(self):
        """Indicates if the timer has expired.
        Return:
            bool: True if expired, False otherwise
        """

        return time() >= self.expire_at