详解python ThreadPoolExecutor异常捕获
ldahual 人气:0python ThreadPoolExecutor线程池的工作线程中出现异常时,主线程不会捕获异常。
解决方法1:
直接在需要执行的任务方法中添加try:
executor = ThreadPoolExecutor() executor.submit(test_work, 0) def test_work(p): try: 1/p except Exception as e: logger.exception(e)
解决方法2:
添加完成运行时的callback:
executor = ThreadPoolExecutor() task = executor.submit(test_work, 0) task.add_done_callback(handle_exception)
handle_exception中又可以通过两种方式捕获异常:
2.1 通过concurrent.futures.Future.exception(timeout=None)
def handle_exception(worker): # Method 1: concurrent.futures.Future.exception(timeout=None) worker_exception = worker.exception() if worker_exception: logger.exception(worker_exception)
2.2 通过concurrent.futures.Future.result(Timeout = None)
def handle_exception(worker): Method 2: try try: worker.result() except Exception as e: logger.exception(e)
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