Python - A Comprehensive Programming Language

Python A Comprehensive Programming Language 胡崇偉 marr@citi.sinica.edu.tw Open Source Software Foundry

自由軟體鑄造場 • 營運網站以提供自由軟體專案進駐開發 • 提供系統技術與工具以協助軟體開發 • 研究開放源碼軟體授權條款與法律政策議題並提供諮詢 • 媒合促成以自由軟體為基礎的本地成功案例 • 報導國內外產業及社群新聞 • 進行人才培育及國際交流活動

Service and Resource 專案管理

Service and Resource 共同筆記檔案下載版本管理專案管理通信論壇待辦事項統計資訊

Service and Resource 資源目錄共同筆記人才資料檔案下載版本管理授權條款專案管理電子報精靈通信論壇待辦事項研究報告統計資訊推廣光碟教學文件

軟體自由協會 • http://www.slat.org/ • 台灣推展軟體自由運動的社團法人 • 執行校園自由軟體應用諮詢中心計畫 • 協助社群代收贊助款項 • 舉辦研討會及推廣活動

Python ?

Python is a Dynamic Object-Oriented Programming Language

Run-Time Typing • Python's run time must work harder than Java's. • a+b=? – inspect the objects a and b to find out their type, which is not known at compile time. – 7 + 11.0 – ‘Hello’ + ‘world’ – (1, 2, 3) + (4, 5, 6)

>>> 是提示符號

Interactive with Interpreter Edit Debug Compile Wait Deploy Print Read Eval Read-Eval-Print Loop

Built-in DataTypes • Number 7, 11.0 elements elements • String ‘Hello World’ • List [7, 11, ‘store’] • Tuple (7, 11, ‘shop’) • Dictionary {‘name’:’marr’, ‘home’:’taipei’} keys

MIT to Try Python in CS Courses

Other Features • Cross Platform and Porting • Excellent Modules • Small • Efficient • Popular

Nokia PyS60

Indexing and Slicing 0 1 2 7 [ ↓ ↓ ↓ -6 ↓ -2 -1 ↓ ↓ ] I L o v e P y t h o n • myString = “I Love Python” • myString[0] == “I” • myString[-1] == “n” • myString[7:-2] == “Pyth”

Code Indenting • No explicit begin or end • No curly braces if age > 18: print “You are old enough.” else: print “You are too young.”

Function Example def myFunc(score): “”” document strings “”” import math math.sqrt(score) * 10

File Handling fileobj = open(“myfile”, “r”) lines = fileobj.readlines() for line in lines: print line

Socket Creation import socket s = socket.socket( socket.AF_INET, socket.SOCK_STREAM) s.connect( ("www.mysite.com", 80))

Twisted - Networking Engine • A web server, numerous chat clients, chat servers, mail servers and more. • Supported protocols: TCP, SSL, multicast, HTTP, IMAP and more • Sample apps: BitTorrent, CIA Bot, BuildBot, apt-proxy2

RestructuredText • http://docutils.sourceforge.net/ • Support Formats: HTML,XML,S5,LaTeX • rst2html < myRST.txt > myRST.html

Version Control • Mercurial

GUI Library and Toolkit

Wingware IDE

Python Package Index

PyGame

Blender

Elephants Dream

SQLAlchemy from sqlalchemy import * db = create_engine(‘sqlite:///tutorial.db’) metadata = MetaData(db) users = Table(‘users’, metadata, Column(‘user_id’, Integer, primary_key=True), Column(‘name’, String(40)), ) users.create() i = users.insert() i.execute(name=‘marr’)

Web Frameworks

Python Hosting

Extending and Embedding $ swig -python example.i $ gcc -c example.c example_wrap.c -I/usr/local/include/python2.1 $ ld -shared example.o example_wrap.o -o _example.so >>> import example >>> example.fact(5) 120

Self Learning – Where to Start • On-line Tutorial • Books – Google ‘python tutorial’ – Better in English

Video Tutorials • http://www.showmedo.com/ • http://www.youtube.com/ • http://video.google.com/ • http://www.blip.tv/

Local User Groups • http://python.org.tw/ • http://planet.python.org.tw/ • Facebook: Python Taiwan • Google Group: pythontw • OpenFoundry Forums • Hemidemi: python

Anytime, Anywhere IPython Google App Engine http://shell.appspot.com/

Python-based CMS Case Study

Plone … a CMS Built on Zope Written in Python

Blog (CoreBlog)

Portal (CIA, USA)

Portal (NASA, USA)

Network Management (ZenOSS)

Issue Tracker (Poi)

Download Installer • http://plone.org/products/plone

Windows Installer

Plone Controller

Filesystem Listing • Python • Zope • Plone • Packages/Products • Software Home • Instance Home

One Database, Many Instances HTTP Requests and Responses port 8080 port 8081 ZEO Client #1 ZEO Client #2 Data.fs Instance #1 Instance #2

Front Page

Zope Management Interface (ZMI)

Site Setup

Guest View

Authenticated View

- Tip for Trying Out Different Browsers for Different Users/Roles One for Admin, Another for Regular User

Usecase #1 Create a New User

Views Available After Login • Personal Bar • Content Views

Usecase #2 Create New Contents (Page)

Default Content Types Page Image News Item File Event Link

Title to ID (Part of the URL) ↓

Visual Editor

Content States

Default State and Workflow

Roles and Permissions View Add Edit Review Manager ✔ ✔ ✔ ✔ Reviewer ✔ ✔ ✔ Member ✔ ✔ ✔ Non-Login ？

Core Security Mapping

Transaction and Undo

Usecase #3 Manage Portlets

Usecase #4 Enable OpenID Support

Usecase #5 Change Theme (to NuPlone)

Free Themes

Better and Super Plone ?

Want More ? Join the Community and Develop !

Starting Points • http://plone.org/documentation • http://marrtw.blogspot.com/2009/04/plone3-books.html

SQL Database Connection Z SQL Z SQL Z SQL Z SQL Z SQL Z SQL Method Method Method Method Method Method MySQL PgSQL ODBC Database Database Database Connection Connection Connection

Database Components HTML WYSWYG Editor Plone DTML Page Template Site Development and Search Interface Script Management Z SQL Method Database Zope Connection MySQLDA PsycopgDA ODBCDA Database Gadfly Adapter MySQL PostgreSQL MSSQL

Designer Friendly Templates • Work with WYSIWYG editors • Zope Page Template (ZPT) – Template Attribute Language (TAL) – Macro Expansion Tag Attribute Language (METAL) XML Namespace TAL statement name body Attribute Attribute Element Name Value Content <title tal:content="here/title">Page Title</title>

Theme Designers ? • AJAX / jQuery Support • KSS = Kinetic Style Sheets • Deliverance • Must Read – Plone 3 Theming

Repeatable Development editing running with buildout.cfg bin/buildout installed as downloading checking into product/ package *.egg Python Package *.tar.gz Index

Build Your Own Project cd c: C:plonepythonScriptspaster create plone3_buildout MyBuildout cd MyBuildout vim buildout.cfg binbuildout.exe

buildout.cfg Sample [buildout] http-address = 8080 eggs = Plone my.package zcml = my.package debug-mode = on

Summary A Comprehensive CMS 通用型的內容管理系統 The Web CMS Report Ideaware Report

Web CMS 2007 Technology Content Production Services Standards Authoring & Transformation Development Aggregation Access Control Repository Services Templating Metadata/Taxonomy Management Page Rendering Globalization Usability Promotion Path Internationalization System Reporting Content Delivery Services Vendor Intangibles Personalization Maintenance & Support Site Search Integration & Tech Partnerships Scaling & Performance Active User Groups Multichannel & Syndication Services & Channel Content Retention Product QA User-Generated Content Strategy & Roadmap Micro-Applications Good Value Site Analytics

Active Community

Multilingual Support

Open Source Projects ArgoUML SchoolTool

Alternative Theming - Deliverance

Developer Baby Steps • Python Script + External Method

Plone Hosting

Thank You ! Question? Email to marr.tw@gmail.com

Python - A Comprehensive Programming Language

by TsungWei Hu on Sep 15, 2009

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