python概述 python介绍.ppt

Python概述
Python介绍
Why Python
与其他语言的比较
Who Use Python
应用实例
开发环境安装
What is Python
动态
面向对象
易集成
扩展库
易学
高生产力
代码质量、可维护行高
即简单又功能强大的语言,追求自由灵活简单直接
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Python哲学1
Beautiful is better than ugly.
Explicit is better than implicit.
Simple is better plex.
Complex is better plicated.
Flat is better than nested.
Sparse is better than dense.
Readability counts.
Special cases aren't special enough to break the rules.
Although practicality beats purity.
Errors should never pass silently.
Unless explicitly silenced.
The Zen of Python, by Tim Peters
>>>import this
>>>this
<module 'this' from 'C:\Py24\lib\'>
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Python哲学2
In the face of ambiguity, refuse the temptation to guess.
There should be one-- and preferably only one --obvious way to do it.
Although that way may not be obvious at first unless you're Dutch.
Now is better than never.
Although never is often better than *right* now.
If the implementation is hard to explain, it's a bad idea.
If the implementation is easy to explain, it may be a good idea.
Namespaces are one honking great idea -- let's do more of those
Python明确把简洁明了、具有可读性及可维护性的代码作为设计目标
鼓励程序员边试边编写代码的工作方式
强调代码组织机制
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Why Python 1
Fast
Extensible
Powerful
Portable
Scalable
Maintainable
Open
Ubiquitous
WingWare公司”Benefits of Python” hon/benefits
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Why Python 2
功能强大
动态性
高级数据类型及其表达力
扩展库
代码组织机制
单元测试
命令窗口
自动内存管理
跨平台
Python虚拟机与字节码
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Why Python 3
容易
易于集成
CPython、JPython、C#Python
易于学****br/>CP4E(RI /essays/)
易于使用
易于面向问题的思考
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个人原因
集成性
动态性
代码组织、开发模式
一次即可
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