thread.start_new_thread 与 threading.Thread.start
python 中的 thread.start_new_thread 和 threading.Thread.start 有什么区别？
我注意到，当调用 start_new_thread 时，新线程会在调用线程终止后立即终止。 threading.Thread.start 则相反：调用线程等待其他线程终止。
What is the difference between thread.start_new_thread and threading.Thread.start in python?
I have noticed that when start_new_thread is called, the new thread terminates as soon as the calling thread terminates. threading.Thread.start is the opposite: the calling thread waits for other threads to terminate.
如果你对这篇内容有疑问，欢迎到本站社区发帖提问 参与讨论，获取更多帮助，或者扫码二维码加入 Web 技术交流群。
绑定邮箱获取回复消息
由于您还没有绑定你的真实邮箱，如果其他用户或者作者回复了您的评论，将不能在第一时间通知您！
发布评论
评论（2）
thread模块是 Python 的低级线程 API。不建议直接使用它，除非您确实需要。threading模块是一个高级 API，构建在thread之上。Thread.start方法实际上是使用thread.start_new_thread实现的。Thread的daemon属性必须在调用start之前设置，指定线程是否应该是守护进程。当没有剩余活动的非守护线程时，整个 Python 程序将退出。默认情况下，daemon为False，因此该线程不是守护进程，因此该进程将等待其所有非守护线程退出，这是您的行为正在观察。PS
start_new_thread确实是非常低级的。它只是 Python 核心线程启动器的一个薄包装，它本身调用操作系统线程生成函数。The
threadmodule is the low-level threading API of Python. Its direct usage isn't recommended, unless you really need to. Thethreadingmodule is a high-level API, built on top ofthread. TheThread.startmethod is actually implemented usingthread.start_new_thread.The
daemonattribute ofThreadmust be set before callingstart, specifying whether the thread should be a daemon. The entire Python program exits when no alive non-daemon threads are left. By default,daemonisFalse, so the thread is not a daemon, and hence the process will wait for all its non-daemon thread to exit, which is the behavior you're observing.P.S.
start_new_threadreally is very low-level. It's just a thin wrapper around the Python core thread launcher, which itself calls the OS thread spawning function.请参阅 threading.Thread.daemon 标志 - 基本上只要没有非-守护线程正在运行，解释器终止。
See the threading.Thread.daemon flag - basically whenever no non-daemon threads are running, the interpreter terminates.