python简单介绍
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特点
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简单易学
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功能强大
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兼容性好
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扩展性好
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开源
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例子
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好工具iPython
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内建函数build-in
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open,range,lambda
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map,filter
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模块
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sys,os
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time,datetime
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hashlib
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Tips
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[i for i in lst if i]
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[i.strip() for i in lst if i]
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def fun(arg1,arg2)
d={arg1:11,arg2:22}
fun(d[arg1],d[arg2])
fun(**d)
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p = [a,b,c]#want a/b/cos.path.join(*p)
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a=[a,b,c]#want a_b_c or a*b*c’_’.join(a)’*’.join(a)b=’fuck’#want fuck! fuck!...”%s! ” % (b) * 20
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源代码style guide
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tab,space
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def fun():tab>a=xx....return a
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好4个space
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#!/usr/bin/env python# coding=utf-8
# -*- coding: utf-8 -*-
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#NOimport os,sys#Yesimport osimport sys#Butfrom os import popen,popen2
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#Yesa = 1 + 2blockq = 3 + 4#Noa = 1 + 2blockq = 3 + 4
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1行不超79etc.
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Py3khas come
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Style Changes
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4-spaceONLY
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• None, as 成了关键字
• print 成了函数
• dict.has_key 改用in操作符
• int和long没有差别了
• 所有的strings都是Unicode
• 不可比的类型之间比较将出异常
• <>操作符没有了，!=代替
• apply()用f(*args,**kw)代替
• xrange()用rang()代替
• map和filter没有了，list可以管
• etc.
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ModuleChanges
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• Removed
• sha,md5: hashlib代替
• mimetools: email package代替
• timing: time.clock()代替
• Renamed
• cPickle: _pickle
• StringIO/cStringIO: 成了io的一个class
• HTMLParser: http.client
• BaseHTTPServer: http.server
• CGIHTTPServer: http.server
• SimpleHTTPServer: http.server
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路漫漫其修远兮！
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Q&A?
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参考资料• PEP: http://www.python.org/dev/peps/
• 8: Style Guide for Python Code
• 3000: Python 3000
• 263: Defining Python Source Code Encodings
• Py3k: http://wiki.python.org/moin/Python3.0
• Python Shell Tab Completion: http://blog.yzlin.org/2008/12/22/75/
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• iPython: http://ipython.scipy.org/moin/
• python常用模块: http://wiki.woodpecker.org.cn/moin/PyCommonUsageMod
• python中文处理: http://wiki.woodpecker.org.cn/moin/PyInChinese
• Python编辑速度技巧: http://wiki.woodpecker.org.cn/moin/PyOptimize
• vim的tabstop: http://blog.khsing.net/2008/12/vims-tabstop.html
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Thanks!
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