, 1): data = list(row) print(f"第{index}行: ", data) ★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p 某个全局变 量，可以使用mul�processing.Value()或mul�processing.Array()来创建共 享变量 在windows系统里使用多进程时，程序里必须有入口函数main()，且程 序末尾必须调用入口函数，即： if __name__ == "__main__": main() ★实例化mul�processing.Process类-调用外部函数 print("计算密集型任务，多进程耗时 %s" % (stop - start)) if __name__ == "__main__": main() ★继承mul�processing.Process类-调用外部函数 import multiprocessing import os import time def work_func(argxx): res =

value streams is that our work is invisible. Unlike physical processes, in the technology value stream we cannot easily see where flow is being impeded or when work is piling up in front of constrained IN THE VALUE STREAM 1. In the book Implementing Lean Software Development: From Concept to Cash, Mary and Tom Poppendieck describe waste and hardship in the software development stream as anything that are written d. Pushing large batches of work to teams and special committees for approval and processing and then waiting for responses 3. Instead a. Use peer reviews of our proposed changes to gain

production access or other privileged accounts. ii. Make it highly visible for everyone in the value stream iii. Promotes responsibility 1. The team has nothing to hide from its visitors (customers, stakeholders)2 from locally optimizing at the expense of the entire value stream – Everyone (development, managers, architects, ops, etc.) in the value stream shares responsibility for handling operational incidents and Guidelines 1. Everyone must have someone review their changes2. Everyone should monitor the commit stream of their fellow team members to identify issues 3. Define changes which qualify as high-risk and

system are shared in a version control repository ii. Version control is for everyone in the value stream iii. Everything, everything, everything is checked into version control 1. Application code & dependencies resolve the problem iii. Prioritize organizational/team goals over individual goals 1. The value stream is a working application, not just working people iv. Later stages may not necessarily stop all

and adapting process to maximize its impact. Continuous Delivery and DevOps place the entire value stream in the hands of that small team so that it can optimize the whole – a term of art in lean thinking

then continuing to adapt the system over time as the business changes versus buying an undefined stream of future services from a vendor who doesn’t know your business and doesn’t have financial incentives