import logging
import time
from enum import Enum
from threading import Thread
from typing import NewType

import _thread
from robot.board import Board

Zone = NewType('Zone', int)

LOGGER = logging.getLogger(__name__)


def kill_after_delay(timeout_seconds):
    """
    Interrupts main process after the given delay.
    """

    end_time = time.time() + timeout_seconds

    def worker():
        while time.time() < end_time:
            remaining = end_time - time.time()
            time.sleep(max(remaining, 0.01))

        LOGGER.info("Timeout %rs expired: Game over!", timeout_seconds)

        # Interrupt the main thread to kill the user code
        _thread.interrupt_main()  # type: ignore

    worker_thread = Thread(target=worker, daemon=True)
    worker_thread.start()
    return worker_thread


class GameMode(Enum):
    """Possible modes the robot can be in."""

    COMPETITION = 'competition'
    DEVELOPMENT = 'development'


class GameState(Board):
    """A description of the initial game state the robot is operating under."""

    @property
    def zone(self) -> Zone:
        """
        The zone in which the robot starts the match.

        This is configured by inserting a competition zone USB stick into the
        robot.

        :return: zone ID the robot started in (0-3)
        """
        return self._send_and_receive({})['zone']

    @property
    def mode(self) -> GameMode:
        """
        :return: The ``GameMode`` that the robot is currently in.
        """
        value = self._send_and_receive({})['mode']
        return GameMode(value)

import logging
import signal
from enum import Enum
from typing import NewType

from robot.board import Board

Zone = NewType('Zone', int)

LOGGER = logging.getLogger(__name__)


def timeout_handler(signum, stack):
    """
    Handle the `SIGALRM` to kill the current process.
    """
    raise SystemExit("Timeout expired: Game Over!")


def kill_after_delay(timeout_seconds):
    """
    Interrupts main process after the given delay.
    """

    signal.signal(signal.SIGALRM, timeout_handler)
    signal.alarm(timeout_seconds)


class GameMode(Enum):
    """Possible modes the robot can be in."""

    COMPETITION = 'competition'
    DEVELOPMENT = 'development'


class GameState(Board):
    """A description of the initial game state the robot is operating under."""

    @property
    def zone(self) -> Zone:
        """
        The zone in which the robot starts the match.

        This is configured by inserting a competition zone USB stick into the
        robot.

        :return: zone ID the robot started in (0-3)
        """
        return self._send_and_receive({})['zone']

    @property
    def mode(self) -> GameMode:
        """
        :return: The ``GameMode`` that the robot is currently in.
        """
        value = self._send_and_receive({})['mode']
        return GameMode(value)

Replace thread killing with SIGALRM
Replace thread killing with SIGALRM

  import logging
- import time
+ import signal
  from enum import Enum
- from threading import Thread
  from typing import NewType
  
- import _thread
  from robot.board import Board
  
  Zone = NewType('Zone', int)
  
  LOGGER = logging.getLogger(__name__)
  
  
+ def timeout_handler(signum, stack):
+     """
+     Handle the `SIGALRM` to kill the current process.
+     """
+     raise SystemExit("Timeout expired: Game Over!")
+ 
+ 
  def kill_after_delay(timeout_seconds):
      """
      Interrupts main process after the given delay.
      """
  
+     signal.signal(signal.SIGALRM, timeout_handler)
+     signal.alarm(timeout_seconds)
-     end_time = time.time() + timeout_seconds
- 
-     def worker():
-         while time.time() < end_time:
-             remaining = end_time - time.time()
-             time.sleep(max(remaining, 0.01))
- 
-         LOGGER.info("Timeout %rs expired: Game over!", timeout_seconds)
- 
-         # Interrupt the main thread to kill the user code
-         _thread.interrupt_main()  # type: ignore
- 
-     worker_thread = Thread(target=worker, daemon=True)
-     worker_thread.start()
-     return worker_thread
  
  
  class GameMode(Enum):
      """Possible modes the robot can be in."""
  
      COMPETITION = 'competition'
      DEVELOPMENT = 'development'
  
  
  class GameState(Board):
      """A description of the initial game state the robot is operating under."""
  
      @property
      def zone(self) -> Zone:
          """
          The zone in which the robot starts the match.
  
          This is configured by inserting a competition zone USB stick into the
          robot.
  
          :return: zone ID the robot started in (0-3)
          """
          return self._send_and_receive({})['zone']
  
      @property
      def mode(self) -> GameMode:
          """
          :return: The ``GameMode`` that the robot is currently in.
          """
          value = self._send_and_receive({})['mode']
          return GameMode(value)
  
Replace thread killing with SIGALRM
## Code Before:
import logging
import time
from enum import Enum
from threading import Thread
from typing import NewType

import _thread
from robot.board import Board

Zone = NewType('Zone', int)

LOGGER = logging.getLogger(__name__)


def kill_after_delay(timeout_seconds):
    """
    Interrupts main process after the given delay.
    """

    end_time = time.time() + timeout_seconds

    def worker():
        while time.time() < end_time:
            remaining = end_time - time.time()
            time.sleep(max(remaining, 0.01))

        LOGGER.info("Timeout %rs expired: Game over!", timeout_seconds)

        # Interrupt the main thread to kill the user code
        _thread.interrupt_main()  # type: ignore

    worker_thread = Thread(target=worker, daemon=True)
    worker_thread.start()
    return worker_thread


class GameMode(Enum):
    """Possible modes the robot can be in."""

    COMPETITION = 'competition'
    DEVELOPMENT = 'development'


class GameState(Board):
    """A description of the initial game state the robot is operating under."""

    @property
    def zone(self) -> Zone:
        """
        The zone in which the robot starts the match.

        This is configured by inserting a competition zone USB stick into the
        robot.

        :return: zone ID the robot started in (0-3)
        """
        return self._send_and_receive({})['zone']

    @property
    def mode(self) -> GameMode:
        """
        :return: The ``GameMode`` that the robot is currently in.
        """
        value = self._send_and_receive({})['mode']
        return GameMode(value)

## Instruction:
Replace thread killing with SIGALRM
## Code After:
import logging
import signal
from enum import Enum
from typing import NewType

from robot.board import Board

Zone = NewType('Zone', int)

LOGGER = logging.getLogger(__name__)


def timeout_handler(signum, stack):
    """
    Handle the `SIGALRM` to kill the current process.
    """
    raise SystemExit("Timeout expired: Game Over!")


def kill_after_delay(timeout_seconds):
    """
    Interrupts main process after the given delay.
    """

    signal.signal(signal.SIGALRM, timeout_handler)
    signal.alarm(timeout_seconds)


class GameMode(Enum):
    """Possible modes the robot can be in."""

    COMPETITION = 'competition'
    DEVELOPMENT = 'development'


class GameState(Board):
    """A description of the initial game state the robot is operating under."""

    @property
    def zone(self) -> Zone:
        """
        The zone in which the robot starts the match.

        This is configured by inserting a competition zone USB stick into the
        robot.

        :return: zone ID the robot started in (0-3)
        """
        return self._send_and_receive({})['zone']

    @property
    def mode(self) -> GameMode:
        """
        :return: The ``GameMode`` that the robot is currently in.
        """
        value = self._send_and_receive({})['mode']
        return GameMode(value)
