优化程序，将这段程序放到子线程里。def rotate(self): count = 0 self._sem.release() while self._running: v = self._dgl.qpin(ROT) if len(v) > 0: count = count + sum(v) if count > self._inspect_step: self._sem.release() count = count % self._inspect_step

可以使用Python内置的`threading`模块来将程序放到子线程中运行。具体实现如下：

import threading

class MyThread(threading.Thread):
    def __init__(self, rotate_func):
        threading.Thread.__init__(self)
        self.rotate_func = rotate_func

    def run(self):
        self.rotate_func()

class MyClass:
    def __init__(self):
        self._running = True
        self._sem = threading.Semaphore(0)

    def rotate(self):
        count = 0
        self._sem.release()
        while self._running:
            v = self._dgl.qpin(ROT)
            if len(v) > 0:
                count = count + sum(v)
            if count > self._inspect_step:
                self._sem.release()
                count = count % self._inspect_step

my_class = MyClass()
thread = MyThread(my_class.rotate)
thread.start()

这样，`rotate`方法就会在一个独立的线程中运行，不会阻塞主线程。当需要停止`rotate`方法时，只需要将`my_class._running`设置为`False`即可。