Python

Create a new mysql.py and write the following code: The code is as follows Copy Code Import MySQLdb After the operation found Importerror:no module named MySQLdb, that your Python environment is not installed

The first chapter is about character groups (Character Class).In a regular expression, it represents "various characters that may appear in the same position", which is written to list all possible characters between brackets [and], simple character

In micro-blog saw the article, and then try to translate a bit, some places do not understand, directly affixed to the original, but also hope to understand the people pointing. # Fast Python Performance Tuning # 1.%timeit (per line) and%prun

First, you get the package you want to install first, and then in the SAE Python root directory to create a named: Virtualenv.bundle.zip Compressed Package to the package you want to install into this compressed bag ... Then modify INDEX.WSGI to add

Instance The code is as follows Copy Code >>> s= "Chinese">>> s' Xd6xd0xcexc4 '>>> S.decode ("GBK")U ' u4e2du6587 '>>> print S.decode ("GBK")Chinese>>> Print SChinese>>> S.decode ("GBK"). Encode ("GBK")' Xd6xd0xcexc4 '>>>

The code is as follows Copy Code "Hello World" 1 Creating hello.py 2 Writing Program: if __name__ = = ' __main__ ':print "Hello World" 3 run Program: Python./hello.py Comments 1 Whether it is a line comment or a paragraph comment,

Example 1 The code is as follows Copy Code From Email.mime.text import Mimetext From Email.mime.audio import MimeaudioFrom Email.mime.image import MimeimageFrom Email.mime.multipart import Mimemultipart #发送邮件Def sendMail

When you print with the Python built-in function, you will find that it supports any number of arguments, that is, the call parameters for print are not fixed. For example: print "Hello"Print "I am", namePrint "Now", Time, "What are you doing?",

  code is as follows copy code Python 2.6.3 (r263rc1:75186, OCT 2 2009, 20:40:30) [MSC v.1500 bit (Intel)]On Win32Type ' help ', ' copyright ', ' credits ' or ' license ' for the more information.>>> Import Sys>>> Sys.path[', ' C:\

The code is as follows Copy Code Import SysImport stringImport OS def detect_nowalk (Dir_path):Files = Os.listdir (Dir_path)For filename in Files:Print "FILE:%SN"% filenameNext = Os.path.join (Dir_path, filename)If Os.path.isdir

To determine whether there are Chinese The code is as follows Copy Code """Determines whether the Unicode code is a Chinese character."""def is_cn_char (i):return 0x4e00def is_cn_or_en (i):o = Ord (i)return o

I made some changes to the original text. Features such as finding and deleting folders and files are implemented in the OS module. You need to pilot into this module when you use it, The methods for importing are: Import OS First, get the

I'm learning Python recently, and I'm going to use it as a reptile. If you want to be a reptile, first grab the page and extract the hyperlink address from the Web page. The simplest implementation is to grab the target Web page and then get the

An existing string, you need to remove the first paragraph separated by a space, as follows >>> Product_model = ' ws-c2960g-24tc-l–fixed Module 0′>>> product_model.split (") [0]' Ws-c2960g-24tc-l ' Split () with no parameters takes all spaces

Format of: 1 str.split ([SEQ [, Maxsplit]]) We are most used to! Name, age | Another user name, age Name:haha,age:20|name:python,age:30|name:fef,age:55 Then we can cut the string object into a list by the split method of the string object. A = '

When using Python to write an interactive program, the two internal functions that are often used are raw_input and input (most commonly or input), and this article looks at the difference between the two by some examples. First, Raw_input1. Input

http://www.pythonware.com/products/pil/ This is called the Python image Library. Simple to open a picture im = Image.open (' filename ') Detailed use Types of pictures that PIL can handlePIL can process raster pictures (blocks of pixel data).

The use of dial-up Internet, there are generally a local IP and an extranet IP, using Python can easily get these two IPUse the gethostbyname and GETHOSTBYNAME_EX two functions to implement The code is as follows Copy Code

Here are a few different implementations of the functions Import Mathdef RESV (LI):new = []If Li:CNT = Len (LI)For I in range (CNT):New.append (Li[cnt-i-1])return newdef resv2 (LI):Li.reverse ()Return Lidef resv3 (LI):hcnt = Int (Math.floor (len