[{"data":1,"prerenderedAt":93},["ShallowReactive",2],{"current-page:/dir/python3-8-0-lv-se-chinese-version":3},{"id":4,"title":5,"body":6,"card_image":75,"cover":72,"datetime":76,"description":5,"extension":77,"featured":78,"layout":79,"links":80,"meta":84,"navigation":85,"og_image":86,"path":87,"seo":88,"slug":89,"stem":90,"tags":91},"directory/dir/1847-Python3.8.0绿色中文版.md","Python3.8.0绿色中文版",{"type":7,"value":8,"toc":71},"minimal",[9,13,17,23,26,29,32,35,38,41,44,47,50,53,56,59,62,65,68],[10,11,5],"h1",{"id":12},"python380绿色中文版",[14,15,16],"p",{},"Python 3.8.0绿色版是2019年发布的Python语言最新版本，可用于编写脚本、自动化以及机器学习和Web开发等各种任务。Python 3.8.0此次更新提供了许多语法改变、内存共享、更有效的序列化和反序列化、改进的字典和更多新功能。除此之外Python3.8新增的pickle模块提供了一种序列化和反序列化Python数据结构或实例的方法，可以将字典原样保存下来供以后读取。",[14,18,19],{},[20,21,22],"strong",{},"此软件“仅限学习交流,不能用于商业用途”，如用于商业用途,请到官方购买正版软件,追究法律责任与本平台无关！",[14,24,25],{},"Python3.8软件特点：",[14,27,28],{},"1、可反转字典",[14,30,31],{},"2、Typing模块的改进",[14,33,34],{},"final修饰器和Final类型标注表明，被修饰或被标注的对象在任何时候都不应该被重写、继承，也不能被重新赋值。",[14,36,37],{},"3、仅通过位置指定的参数",[14,39,40],{},"4、新版本的pickle协议",[14,42,43],{},"5、赋值表达式",[14,45,46],{},"6、多进程共享内存",[14,48,49],{},"7、支持f字符串调试",[14,51,52],{},"Python3.8性能改进：",[14,54,55],{},"1、许多内置方法和函数的速度都提高了20%~50%，因为之前许多函数都需要进行不必要的参数转换。",[14,57,58],{},"2、一个新的opcode缓存可以提高解释器中特定指令的速度。但是，目前实现了速度改进的只有LOAD_GLOBAL opcode，其速度提高了40%。以后的版本中也会进行类似的优化。",[14,60,61],{},"3、文件复制操作如shutil.copyfile()和shutil.copytree()现在使用平台特定的调用和其他优化措施，来提高操作速度。",[14,63,64],{},"4、新创建的列表现在平均比以前小了12%，这要归功于列表构造函数如果能提前知道列表长度的情况下进行的优化。",[14,66,67],{},"5、Python3.8中向新型类（如class A(object)）的类变量中的写入操作变得更快。operator.itemgetter()和collections.namedtuple()也得到了速度优化。",[14,69,70],{},"6、CPython的另一个新的C API——\"vectorcall\"调用协议——可以实现针对Python内部方法更快的调用，而无需创建临时对象。该API依然不稳定，但已有了明显的改善",{"title":72,"searchDepth":73,"depth":73,"links":74},"",2,[],"images/1847-1.webp","2026-08-22 14:27:16","md",false,"resource",[81],{"type":82,"url":83},"Quark","https://pan.quark.cn/s/cee24cfe0812",{},true,null,"/dir/1847-python3.8.0",{"title":5,"description":5},"python3-8-0-lv-se-chinese-version","dir/1847-Python3.8.0绿色中文版",[92],"软件",1787640608187]