python使函数超时需要很长时间

import signal

class TimeoutError(Exception):
    pass

def timeout(seconds):
    def decorator(func):
        def handler(signum, frame):
            raise TimeoutError("Function execution timed out")

        def wrapper(*args, **kwargs):
            signal.signal(signal.SIGALRM, handler)
            signal.alarm(seconds)
            try:
                result = func(*args, **kwargs)
            finally:
                signal.alarm(0)  # 重置信号
            return result

        return wrapper

    return decorator

@timeout(5)  # 设置函数超时时间为5秒
def my_function():
    # 在这里编写需要执行的代码
    pass