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  • python简介

    python简介

                     

                                2.1出生:

                                         吉多 范罗苏姆

                               

                                2.2应用:

                                         爬虫

                                         web

                                         人工智能

                                         自动化运维

                                         云计算

                                         金融

                                         (挣钱)

                                         游戏

                                2.3应用公司:

                                         谷歌

                                         cia

                                         nasa

                                         豆瓣

                                         知乎

                                         yutube

                                         tab

                                         。。。。       

                                2.4优点:

                                         简洁,简单易学

                                         跨平台

                                         开发效率高   第三方库 (类库)

                                         高级语言

                                         嵌入  

                                         可扩展

                                2.5python与其他语言

                                         c,c#,php , java python

                                         第一种(执行速度):

                                                  - c  (机器码)  计算机能够识别的语言

                                                  - c#,php ,java python(字节码)

                                                    字节码  机器码

                                         第二种 (解释性,编译型)

                                                  - c 编译型

                                                  - c#,php ,java python(字节码)

                                                  # python解释型语言

                                         第三种(易学)

                                                  - python

                                                  - 其他语言

                                         1.为什么不学c?

                                                  学习成本高,学习难度大

                                         2.为什么不学c#,java

                                                  学习难度大

                                         3.为什么不学php?

                                                  web

                                                  单一

                                                  因为django出来的晚

                                3.python种类:

                                         cpython  ironpython  jython  pypy      

                                4. python发展史

                                         2004 django

                                         2008 2.7

                                                  2.7 重复代码              语言不统一

                                                  3.x 没有重复代码    语言统一

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  • 原文地址:https://www.cnblogs.com/hahahu/p/9833263.html
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