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未总结—python的多线程

https://python-parallel-programmning-cookbook.readthedocs.io/zh_CN/latest/chapter2/08_Thread_synchronization_with_semaphores.html

https://www.jianshu.com/p/b9b3d66aa0be

http://c.biancheng.net/view/2627.html

https://www.runoob.com/python3/python3-multithreading.html

https%3A%2F%2Fpython-parallel-programmning-cookbook.readthedocs.io%2Fzh_CN%2Flatest%2Fchapter2%2F08_Thread_synchronization_with_semaphores.html%0A%0Ahttps%3A%2F%2Fwww.jianshu.com%2Fp%2Fb9b3d66aa0be%0A%0Ahttp%3A%2F%2Fc.biancheng.net%2Fview%2F2627.html%0A%0Ahttps%3A%2F%2Fwww.runoob.com%2Fpython3%2Fpython3-multithreading.html