lyle2000w的专栏

os.path.isfile(path)Return True ifpath is an existing regular file. This follows symbolic links, so both islink() and isfile() can be true for the same path.

将python字符串格式化方法以例子的形式表述如下：* 定义宽度Python代码>>> '%*s' %(5,'some')' some'- 左对齐Python代码>>> '%-*s' %(5,'some')'some '最小宽度为6的2位精度的浮点小数，位数不够时前补空格Python代码>>> '%6.2f'

API文档：Return a copy of the string with leading and trailing characters removed. If chars is omitted or None, whitespace characters are removed. If given and not None, chars must be a string; the cha

API文档：os.path.join(path1[, path2[, ...]]) Join one or more path components intelligently. If any component is an absolute path, all previous components (on Windows, including the previous drive

API文档：On Unix and Windows, return the argument with an initial component of ~ or ~user replaced by that user‘s home directory.On Unix, an initial ~ is replaced by the environment variable HOME i

API文档：os.path.split(path)Split the pathname path into a pair, (head, tail) where tail is the last pathname component andhead is everything leading up to that. Thetail part will never contain a s

API文档：string.find(s,sub[,start[,end]])Return the lowest index in s where the substringsub is found such thatsub is wholly contained ins[start:end]. Return-1 on failure. Defaults forstart and

API文档：string.count(s, sub[, start[, end]]) Return the number of (non-overlapping) occurrences of substring sub in string s[start:end]. Defaults for start and end and interpretation of negative val

sys.modules是一个字典，他包含了从Python开始运行起，被导入的所有模块。键字就是模块名，键值就是模块队形。请注意除了你的程序导入的模块外还有其他模块。Python在启动时预先装入了一些模块，如果你在一个Python IDE环境下，sys.modules包含了你在IDE中运行的所有程序所导入的模块例子:import sysprint '\n'.join(

os.environ是系统上定义的环境变量的字典例子：import osprint os.environ输出{'TMP': 'C:\\Users\\LYLE20~1\\AppData\\Local\\Temp', 'COMPUTERNAME': 'LENOVO-PC', '1830B7BD-F7A3-4C4D-989B-C004DE465EDE': '17a4:

API文档：string.replace(str, old, new[, maxreplace])         Return a copy of string str with all occurrences of substring old replaced by new. If the optional argument maxreplace is given, the first

API文档：string.split(s[,sep[,maxsplit]])Return a list of the words of the string s. If the optional second argumentsep is absent orNone, the words are separated by arbitrary strings of whi

getopt在PYTHON中的使用        在运行程序时，可能需要根据不同的条件，输入不同的命令行选项来实现不同的功能。目前有短选项和长选项两种格式。短选项格式为"-"加上单个字母选项；长选项为"--"加上一个单词。长格式是在Linux下引入的。许多Linux程序都支持这两种格式。在Python中提供了getopt模块很好的实现了对这两种用法的支持，而且使用简单。一、取得命令

例如，在py脚本所在目录中，有如下文件：readability/readability.jsreadability/readability.txtreadability/readability-print.cssreadability/sprite-readability.pngreadability/readability.css将 readability 目录中

os.path.exists(path)Return True ifpath refers to an existing path. Returns False for broken symbolic links. On some platforms, this function may returnFalse if permission is not granted to exe

ZipFile.close()Close the archive file. You must call close() before exiting your program or essential records will not be written.

ZipFile.write(filename[,arcname[,compress_type]])Write the file named filename to the archive, giving it the archive namearcname (by default, this will be the same asfilename, but without a driv

os.path.relpath(path[,start])Return a relative filepath to path either from the current directory or from an optionalstart point.start defaults to os.curdir.Availability: Windows, Unix.New

os.remove(path)Remove (delete) the file path. If path is a directory,OSError is raised; seermdir() below to remove a directory. This is identical to theunlink() function documented below. On Win

os.mkdir(path[,mode])Create a directory named path with numeric modemode. The defaultmode is 0777 (octal). On some systems,mode is ignored. Where it is used, the current umask value is first mas

class zipfile.ZipFile The class for reading and writing ZIP files. See sectionZipFile Objects for constructor details.

shutil.copy(src,dst)Copy the file src to the file or directorydst. Ifdst is a directory, a file with the same basename as src is created (or overwritten) in the directory specified. Permission bit

os.path.splitdrive(path)Split the pathname path into a pair (drive, tail) where drive is either a drive specification or the empty string. On systems which do not use drive specifications,drive wi

os.path.walk(path,visit, arg) Calls the function visit with arguments (arg, dirname, names) for each directory in the directory tree rooted at path (includingpath itself, if it is a director

API文档：locals()      Update and return a dictionary representing the current local symbol table. Free variables are returned bylocals() when it is called in function blocks, but not in class

API文档：    This module defines a class SGMLParser which serves as the basis for parsing text files formatted in SGML (Standard Generalized Mark-up Language). In fact, it does not provide a full SGML

update([other])Update the dictionary with the key/value pairs fromother, overwriting existing keys. ReturnNone.update() accepts either another dictionary object or an iterable of key/value pairs (

API文档：SGMLParser.reset()     Reset the instance. Loses all unprocessed data. This is called implicitly at instantiation time.翻译文档:    reset有SGMLParser的__init__调用，在reset进行初始化的工作。例子：#! /

转载：水木社区- Python版发信人: RunningOn (挥着翅膀的男孩), 信区: Python标  题: python IDE比较与推荐发信站: 水木社区 (Mon Jul 16 19:34:58 2007), 转信我先给一个初步的表格吧，大家如果有什么意见，或有补充，欢迎提出。有些我没有用过，先不写了。以下是我使用过的python IDE:(更新与201

Python数值和进制转换1.1 python中数值类型     int          整型          123      long     长整型          2147483648L      float     浮点型          3.14不同的数值类型会自动扩充 int数值大于或等于2^31次方,会自动转换成long

binascii.a2b_hex(hexstr)binascii.unhexlify(hexstr)Return the binary data represented by the hexadecimal string hexstr. This function is the inverse of b2a_hex(). hexstr must contain an even number

模块使用：方法1：        导入模块：                import 模块名        调用模块：                模块明.函数名方法2：       导入模块：               from 模块名 import 函数名       调用模块                函数名函数的定义和

使用vim在ubuntu上学习python#!/usr/bin/env python#coding:utf8第1句保证ubuntu使用python来运行文件第2句是如过在代码中包含非ASCII的字符就需要使用#coding:utf8或是#coding=utf8注意；这里是包含顺行的，先执行的程序，再字符编码var = "4"print var*4

一、Python中的线程使用：    Python中使用线程有两种方式：函数或者用类来包装线程对象。1、  函数式：调用thread模块中的start_new_thread()函数来产生新线程。如下例： view plaincopy to clipboardprint?import time  import thread  def timer(no, inter

num=2;str(num);

import httplibconn = httplib.HTTPConnection("www.baidu.com");conn.request("GET", "/index.html");r1 = conn.getresponse();print r1.status, r1.reason;print("\n"+r1.read());conn.close();

SyntaxError: Non-ASCII character '\xe7' in file  出现这种错误的原因是程序中的编码出问题了，只要在程序的最前面加上#-*- coding: UTF-8 -*-

API文档：   SGMLParser.feed(data) Feed some text to the parser. It is processed insofar as it consists of complete elements; incomplete data is buffered until more data is fed or close() is called.

API文档：re.sub(pattern,repl,string[,count, flags])Return the string obtained by replacing the leftmost non-overlapping occurrences ofpattern instring by the replacementrepl. If the pattern isn’t

API文档：globThe glob module finds all the pathnames matching a specified pattern according to the rules used by the Unix shell. No tilde expansion is done, but*,?, and character ranges expressed