tag("jobxx") def scheduler_thread(): while True: schedule.run_pending() time.sleep(1) # 启动调度器线程 thread = threading.Thread(target=scheduler_thread) thread.start() schedule.run_all() ★第16章、多进程与多线程 ★多进程mul�processing.Process类 python多进程（mul�-process）适用于计算密集型的任务， 对于I/O密集型任务应该使用多线程（mul�-thread），比如磁盘读写， 网络通信等 在python中，对于计算密集型任务，多进程占优势；对于IO密集型任 务，多线程占优势。 使用多进程时，各进程拥有独立的内存空间，无法共享内存空间，所 以 ★多线程threading.Thread类 python多线程（mul�-thread）适用于I/O密集型的任务， 对于计算密集型任务应该使用多进程（mul�-process） Python3有两个标准库 _thread 和 threading 提供对线程的支持 python2为thread和threading模块 ★简单线程_thread模块 import _thread import time

document in one thread, and then sits there as a ‘server’ requesting pages and rendering them for other threads that need them, then the library is only ever being called from this one thread. Other threads time it is simplest to just use a different context for every thread; just create a new context at the same time as you create the thread. For more details see “Cloning the context” below. 2. “No simultaneous simultaneous calls to MuPDF in different threads are allowed to use the same document.” Only one thread can be accessing a document at a time, but once display lists are created from that document, multiple

Script mode, you can freely start new thread and call PyWebIO interactive functions in it. When all non-daemonic [https://docs.python.org/3/library/threading.html#thread- objects] threads finish running, PyWebIO interactive functions in new thread, you need to use register_thread(thread) to register the new thread (so that PyWebIO can know which session the thread belongs to). If the PyWebIO interactive interactive function is not used in the new thread, no registration is required. Threads that are not registered with register_thread(thread) calling PyWebIO’s interactive functions will cause SessionNotFoundException

Script mode, you can freely start new thread and call PyWebIO interactive functions in it. When all non-daemonic [https://docs.python.org/3/library/threading.html#thread- objects] threads finish running, PyWebIO interactive functions in new thread, you need to use register_thread(thread) to register the new thread (so that PyWebIO can know which session the thread belongs to). If the PyWebIO interactive interactive function is not used in the new thread, no registration is required. Threads that are not registered with register_thread(thread) calling PyWebIO’s interactive functions will cause SessionNotFoundException

document in one thread, and then sits there as a ‘server’ requesting pages and rendering them for other threads that need them, then the library is only ever being called from this one thread. Other threads time it is simplest to just use a different context for every thread; just create a new context at the same time as you create the thread. For more details see “Cloning the context” below. 2. “No simultaneous simultaneous calls to MuPDF in different threads are allowed to use the same document.” Only one thread can be accessing a document at a time, but once display lists are created from that document, multiple

Script mode, you can freely start new thread and call PyWebIO interactive functions in it. When all non-daemonic [https://docs.python.org/3/library/threading.html#thread- objects] threads finish running, PyWebIO interactive functions in new thread, you need to use register_thread(thread) to register the new thread (so that PyWebIO can know which session the thread belongs to). If the PyWebIO interactive interactive function is not used in the new thread, no registration is required. Threads that are not registered with register_thread(thread) calling PyWebIO’s interactive functions will cause SessionNotFoundException

Script mode, you can freely start new thread and call PyWebIO interactive functions in it. When all non-daemonic [https://docs.python.org/3/library/threading.html#thread- objects] threads finish running, PyWebIO interactive functions in new thread, you need to use register_thread(thread) to register the new thread (so that PyWebIO can know which session the thread belongs to). If the PyWebIO interactive interactive function is not used in the new thread, no registration is required. Threads that are not registered with register_thread(thread) calling PyWebIO’s interactive functions will cause SessionNotFoundException

Script mode, you can freely start new thread and call PyWebIO interactive functions in it. When all non-daemonic [https://docs.python.org/3/library/threading.html#thread- objects] threads finish running, PyWebIO interactive functions in new thread, you need to use register_thread(thread) to register the new thread (so that PyWebIO can know which session the thread belongs to). If the PyWebIO interactive interactive function is not used in the new thread, no registration is required. Threads that are not registered with register_thread(thread) calling PyWebIO’s interactive functions will cause SessionNotFoundException

Script mode, you can freely start new thread and call PyWebIO interactive functions in it. When all non-daemonic [https://docs.python.org/3/library/threading.html#thread- objects] threads finish running, PyWebIO interactive functions in new thread, you need to use register_thread(thread) to register the new thread (so that PyWebIO can know which session the thread belongs to). If the PyWebIO interactive interactive function is not used in the new thread, no registration is required. Threads that are not registered with register_thread(thread) calling PyWebIO’s interactive functions will cause SessionNotFoundException

be used in a multi-threading environment. Script mode In Script mode, you can freely start new thread and call PyWebIO interactive functions in it. When all non-daemonic threads finish running, the script PyWebIO interactive functions in new thread, you need to use register_thread(thread) to register the new thread (so that PyWebIO can know which session the thread belongs to). If the PyWebIO interactive interactive function is not used in the new thread, no registration is required. Threads that are not registered with register_thread(thread) calling PyWebIO’s interactive functions will cause SessionNotFoundException