Python

1. Match () starts matching from the starting position2. Search () matches any position. If multiple matches exist, only the first matches are returned.3. finditer () returns all matches4. Every matching is the best matching possible. For example:>>>

After installing the installation file, run import mysqldb. the following error occurs: File "C: \ python26 \ Lib \ Site-packages \ mysqldb \__ init _. py", line 19, in Importerror: DLL load failed: the specified module cannot be found. After

For example, to convert a String object s from a GBK internal code to a UTF-8, you can do the following: S. Decode ('gbk'). encode ('utf-8 ′) However, in actual development, I found that exceptions often occur in this method: Unicodedecodeerror:

Note that an array of characters is passed in. the compiler removes all corresponding characters at both ends until no matching characters exist, for example: CopyCodeThe Code is as follows: thestring = 'saaaay Yes No yaaaass' Print thestring.

For example: >>> Print ord ('A ') 97 >>> Print CHR (97) A Next we can start to design our case-insensitive Conversion ProgramNow: CopyCodeThe Code is as follows :#! /Usr/bin/ENV Python # Coding = UTF-8 Def ucasechar (CH ):If ord (CH) in

1. First, the export function of VC ++ DLL is defined as the export function of Standard C: CopyCode The Code is as follows: # ifdef lrdlltest_exports # Define lrdlltest_api _ declspec (dllexport) # Else # Define lrdlltest_api _ declspec (dllimport)

1. String. maketrans set the String Conversion rule table (translation table) CopyCode The Code is as follows: allchars = string. maketrans ('','') # All strings, that is, the strings are not replaced. Atob = string. maketrans ('A', 'B') #

1. Set the fomat format as follows: CopyCodeThe Code is as follows: # Take the first five characters, skip the four Chinese characters, and then take three more characters Format = '5s 4x 3s' 2. Use struck. Unpack to obtain the substringCopy

CopyCode The Code is as follows: mulline = "" Hello !!! Wellcome to Python's world! There are a lot of interesting things! Enjoy yourself. Thank you! """ Print ''. Join (mulline. splitlines ())Print '------------'Print ''. Join (mulline.

For example: Class Book ( Object ): Def _ Setattr __ ( Self , Name , Value ): If Name = 'Value' : Object . _ Setattr __ ( Self , Name , Value - 100 ) Else

1. Server (server. py) What the server must do is: 1. Create a socket object Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/--> Import SocketS = Socket. socket (socket. af_inet, socket.

1. hashlibImport hashlib # Create a hash object MD = hashlib. MD5 () # MD = hashlib. sha1 () # MD = hashlib. shavel () # MD = hashlib. sha25 () # MD = hashlib. sha384 () # MD = hashlib. sha512 () 1.1 hashlib. Update (ARG) 1.2 hashlib.

The example can be downloaded from the attachment. 1. load XML files There are two ways to load an XML file: loading a specified string and loading a specified file. 2. Obtain the Element Method A) through getiterator B) getchildren C) Find Method D)

CopyCode The Code is as follows: #-*-coding: UTF-8 -*- Import threading Import time Def fun (name, ls_name, front_thread = none ): ''''' Thread start Function Use front_thread to run threads in an orderly manner ''' Time. Clock () Time. Sleep (2) #

Binary Operators Special Method + _ Add __,__ Radd __ - _ Sub __,__ rsub __ * _ Mul __,__ rmul __ / _ Div __,__ rdiv __,__ truediv __,__ rtruediv __ // _

CopyCode The Code is as follows: # filename: BRN. py # Description: Batch replace certain words in file names # Use to bat rename the file in a Dir (modify the Suffix from A to B) for Windows Vista OS Import sys Import OS Import fnmatch Import re #

CopyCodeThe Code is as follows: def find_file_by_pattern (pattern = '. *', base = ".", circle = true ): ''''' Search for all ''' under a given folder ''' Re_file = Re. Compile (pattern) If base = ".": Base = OS. getcwd () Final_file_list =

1. Self, CLS is not a keyword In python, self and Cls are not keywords and can be replaced by any variable you write. Code 1 Copy code The Code is as follows: Class mytest: Myname = 'Peter' Def sayhello (Hello ): Print "Say hello to % s" % Hello.

1. Open a webpage to retrieve all the contentFrom urllib import urlopen Doc = urlopen ("http://www.baidu.com"). read () Print doc 2. Get the Http HeaderFrom urllib import urlopen Doc = urlopen ("http://www.baidu.com ") Print doc.info () Print

In Python, initialize an array of 5x3 and each item is 0. The best method is: Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/-->Multilist = [[0 for col in range (5)] for row in range (3)] We know that