import signal

def handler(signum, frame):
    raise TimeoutError("Function timed out")

def long_running_function():
    # 模擬耗時(shí)操作
    import time
    time.sleep(10)
    return "Done"

# 設(shè)置超時(shí)時(shí)間為5秒
signal.signal(signal.SIGALRM, handler)
signal.alarm(5)

try:
    result = long_running_function()
except TimeoutError as e:
    print(f"Error: {e}")
finally:
    signal.alarm(0)  # 取消鬧鐘

from multiprocessing import Process, Queue
import time

def run_func(func, args, kwargs, queue):
    try:
        result = func(*args, **kwargs)
        queue.put(result)
    except Exception as e:
        queue.put(e)

def timeout_function(func, args=(), kwargs={}, timeout=5):
    queue = Queue()
    p = Process(target=run_func, args=(func, args, kwargs, queue))
    p.start()
    p.join(timeout)
    
    if p.is_alive():
        p.terminate()
        p.join()
        raise TimeoutError(f"Function {func.__name__} timed out after {timeout} seconds")
    
    result = queue.get()
    if isinstance(result, Exception):
        raise result
    return result

# 使用示例
def my_slow_function(seconds):
    time.sleep(seconds)
    return f"Slept for {seconds} seconds"

try:
    print(timeout_function(my_slow_function, args=(3,), timeout=5))  # 正常完成
    print(timeout_function(my_slow_function, args=(6,), timeout=5))  # 超時(shí)
except TimeoutError as e:
    print(e)

from concurrent.futures import ThreadPoolExecutor, TimeoutError

def long_running_task(n):
    import time
    time.sleep(n)
    return f"Completed after {n} seconds"

with ThreadPoolExecutor() as executor:
    future = executor.submit(long_running_task, 4)
    try:
        result = future.result(timeout=2)
        print(result)
    except TimeoutError:
        print("The task took too long and was terminated")

import functools
from concurrent.futures import ThreadPoolExecutor

def timeout(timeout_seconds):
    def decorator(func):
        @functools.wraps(func)
        def wrapper(*args, **kwargs):
            with ThreadPoolExecutor() as executor:
                future = executor.submit(func, *args, **kwargs)
                try:
                    return future.result(timeout=timeout_seconds)
                except TimeoutError:
                    # 可以在這里添加超時(shí)后的處理邏輯
                    raise TimeoutError(f"Function {func.__name__} timed out after {timeout_seconds} seconds")
        return wrapper
    return decorator

# 使用示例
@timeout(3)
def database_query():
    import time
    time.sleep(5)  # 模擬耗時(shí)數(shù)據(jù)庫查詢
    return "Query results"

???????try:
    print(database_query())
except TimeoutError as e:
    print(e)

import asyncio

async def fetch_data():
    await asyncio.sleep(5)  # 模擬網(wǎng)絡(luò)請求
    return "Data fetched"

async def main():
    try:
        result = await asyncio.wait_for(fetch_data(), timeout=3.0)
        print(result)
    except asyncio.TimeoutError:
        print("The fetch operation timed out")

asyncio.run(main())